ci: add PR and issue templates

.github/ISSUE_TEMPLATE/bug_report.yaml

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+---
+name: Bug Report
+description: Create a report to help us improve
+labels: [bug]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to fill out this bug report! Please make sure to fill out the entire form below, providing as much context as you can in order to help us triage and track down your bug as quickly as possible.
+
+        Before filing a bug, please be sure you have searched through [existing bugs](https://github.com/open-telemetry/opentelemetry-python-genai/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc+label%3Abug) to see if your bug is already addressed.
+
+  - type: textarea
+    id: environment
+    attributes:
+      label: Describe your environment
+      description: |
+        Please describe any aspect of your environment relevant to the problem, including your Python version, [platform](https://docs.python.org/3/library/platform.html), version numbers of installed dependencies, information about your cloud hosting provider, etc. If you're reporting a problem with a specific version of a library in this repo, please check whether the problem has been fixed on main.
+      value: |
+        OS: (e.g, Ubuntu)
+        Python version: (e.g., Python 3.12.0)
+        Package version: (e.g., 0.5b0)
+        GenAI library (e.g. anthropic, openai) and version:
+
+  - type: textarea
+    attributes:
+      label: What happened?
+      description: Please provide as much detail as you reasonably can.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Steps to Reproduce
+      description: Provide a [minimal reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) if possible and the needed steps to reproduce the problem.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Expected Result
+      description: What did you expect to see?
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Actual Result
+      description: What did you see instead?
+    validations:
+      required: true
+
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional context
+      description: Add any other context about the problem here.
+      placeholder: Any additional information...
+
+  - type: dropdown
+    id: contribute
+    attributes:
+      label: Would you like to implement a fix?
+      description: For guidance on how to get started, refer to the [contribution guide](https://github.com/open-telemetry/opentelemetry-python-genai/blob/main/CONTRIBUTING.md).
+      options:
+        - "No"
+        - "Yes"
+
+  - type: dropdown
+    attributes:
+      label: Tip
+      description: This element is static, used to render a helpful sub-heading for end-users and community members to help prioritize issues. Please leave as is.
+      options:
+        - <sub>[React](https://github.blog/news-insights/product-news/add-reactions-to-pull-requests-issues-and-comments/) with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding `+1` or `me too`, to help us triage it. Learn more [here](https://opentelemetry.io/community/end-user/issue-participation/).</sub>
+      default: 0

.github/ISSUE_TEMPLATE/config.yml

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+contact_links:
+  - name: Slack
+    url: https://cloud-native.slack.com/archives/C06KR7ARS3X
+    about: Or the `#otel-genai-instrumentation` channel in the CNCF Slack instance.

.github/ISSUE_TEMPLATE/feature_request.yaml

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+---
+name: Feature Request
+description: Suggest an idea for this project
+labels: [enhancement]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Before opening a feature request against this repo, consider whether the feature should/could be implemented in the [OpenTelemetry specification](https://github.com/open-telemetry/opentelemetry-specification) or [GenAI semantic conventions](https://github.com/open-telemetry/semantic-conventions/tree/main/docs/gen-ai). If so, please open an issue there first.
+  - type: textarea
+    id: related-problem
+    attributes:
+      label: What problem do you want to solve?
+      description: Is your feature request related to a problem? If so, provide a concise description of the problem.
+      placeholder: Describe the problem and include relevant issue IDs
+    validations:
+      required: true
+  - type: textarea
+    id: solution
+    attributes:
+      label: Describe the solution you'd like
+      description: What do you want to happen instead? What is the expected behavior?
+      placeholder: I'd like to ...
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Describe alternatives you've considered
+      description: Which alternative solutions or features have you considered?
+      placeholder: Some potential solutions
+    validations:
+      required: false
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional Context
+      description: Add any other context about the feature request here.
+      placeholder: Some related requests in other projects or upstream spec proposals.
+    validations:
+      required: false
+  - type: dropdown
+    id: contribute
+    attributes:
+      label: Would you like to implement a fix?
+      description: |
+        For guidance on how to get started, refer to the [contribution guide](https://github.com/open-telemetry/opentelemetry-python-genai/blob/main/CONTRIBUTING.md).
+      options:
+        - "No"
+        - "Yes"
+
+  - type: dropdown
+    attributes:
+      label: Tip
+      description: This element is static, used to render a helpful sub-heading for end-users and community members to help prioritize issues. Please leave as is.
+      options:
+        - <sub>[React](https://github.blog/news-insights/product-news/add-reactions-to-pull-requests-issues-and-comments/) with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding `+1` or `me too`, to help us triage it. Learn more [here](https://opentelemetry.io/community/end-user/issue-participation/).</sub>
+      default: 0

.github/pull_request_template.md

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+# Description
+
+Please include a summary of the change and which issue, if any, is fixed.
+Include the motivation and context for the change.
+
+Fixes # (issue)
+
+## Type of change
+
+Please delete options that are not relevant.
+
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] This change requires a documentation update
+
+# How has this been tested?
+
+Please describe the tests that you ran to verify your changes. Provide
+instructions so we can reproduce. List any relevant details for your test
+configuration.
+
+- [ ] Test A
+
+# Checklist
+
+See [CONTRIBUTING.md](https://github.com/open-telemetry/opentelemetry-python-genai/blob/main/CONTRIBUTING.md)
+for the style guide, changelog guidance, and more.
+
+- [ ] Followed the style guidelines of this project
+- [ ] Changelog updated (or `Skip Changelog` label applied if no entry is needed)
+- [ ] Unit tests added
+- [ ] Documentation updated