Add GitHub issue templates for bug, feature, refactor, and blank intake (#11)

* Initial plan

* docs: add github issue templates for bug feature refactor and blank

Co-authored-by: JusterZhu <11714536+JusterZhu@users.noreply.github.com>
Agent-Logs-Url: https://github.com/GeneralLibrary/GeneralUpdate.Maui/sessions/6ee4f99b-29db-4cac-b558-79f04486dbaa

* docs: add distinct emojis to each issue template

Co-authored-by: JusterZhu <11714536+JusterZhu@users.noreply.github.com>
Agent-Logs-Url: https://github.com/GeneralLibrary/GeneralUpdate.Maui/sessions/fe7b63b0-285d-4808-8a5c-aa2e389dd0f4

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: JusterZhu <11714536+JusterZhu@users.noreply.github.com>

Author: Copilot

.github/ISSUE_TEMPLATE/blank.md

@@ -0,0 +1,9 @@
+---
+name: "📝 Blank issue"
+about: "📝 Open a free-form issue without a structured template"
+title: ""
+labels: []
+assignees: []
+---
+
+Use this template for issues that do not fit the other categories.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,33 @@
+---
+name: "🐛 Bug report"
+about: "🐛 Report a reproducible bug in GeneralUpdate.Maui"
+title: "[Bug]: "
+labels: ["bug"]
+assignees: []
+---
+
+## Description
+Describe the problem clearly.
+
+## Reproduction steps
+1. 
+2. 
+3. 
+
+## Expected behavior
+What did you expect to happen?
+
+## Actual behavior
+What happened instead?
+
+## Environment
+- Package version:
+- .NET SDK version:
+- Target framework (for example `net10.0-android`):
+- Device/OS version:
+
+## Logs / stack trace / screenshots
+Paste any relevant logs, stack traces, or screenshots.
+
+## Additional context
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,25 @@
+---
+name: "✨ Feature request"
+about: "✨ Suggest a new feature or enhancement"
+title: "[Feature]: "
+labels: ["enhancement"]
+assignees: []
+---
+
+## Summary
+Describe the feature you want.
+
+## Problem statement
+What problem does this solve?
+
+## Proposed solution
+Describe your preferred solution.
+
+## Alternatives considered
+Describe any alternatives you considered.
+
+## Usage example
+Show how this feature would be used (pseudo-code or sample API usage is welcome).
+
+## Additional context
+Add any other context, links, or references.

.github/ISSUE_TEMPLATE/refactoring.md

@@ -0,0 +1,25 @@
+---
+name: "♻️ Refactoring proposal"
+about: "♻️ Propose internal code improvements without changing external behavior"
+title: "[Refactor]: "
+labels: ["refactor"]
+assignees: []
+---
+
+## Scope
+Which module(s) should be refactored? (for example `GeneralUpdate.Maui.Android`)
+
+## Current pain points
+Describe maintainability, readability, or complexity issues.
+
+## Refactoring proposal
+Describe the intended refactor.
+
+## Behavior compatibility
+How will you ensure no functional behavior changes?
+
+## Risks and mitigations
+List possible risks and how to mitigate them.
+
+## Validation plan
+Describe tests/checks to prove the refactor is safe.