docs(github): add bug report issue template

Author: hmza-hb

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,58 @@
+name: Bug Report
+description: Something isn't working correctly
+labels: ["bug", "triage"]
+assignees: ["hamza-hafeez82"]
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to report a bug. Please fill this out as completely as possible.
+
+  - type: input
+    id: version
+    attributes:
+      label: Cortex version
+      description: Run `cortex --version` and paste the output
+      placeholder: "v0.1.0"
+    validations:
+      required: true
+
+  - type: input
+    id: os
+    attributes:
+      label: Operating system
+      placeholder: "macOS 14.4 / Ubuntu 22.04 / Windows 11"
+    validations:
+      required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: What happened?
+      description: A clear description of the bug
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: What did you expect?
+    validations:
+      required: true
+
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: Steps to reproduce
+      placeholder: |
+        1. Run `cortex scan ./myrepo`
+        2. ...
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant output or logs
+      render: shell