Streamline issue submission with YAML forms (#1608)

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,30 @@
+name: Feature Request
+description: Suggest an idea for this project
+labels: ['kind/enhancement', 'status/need-triage']
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to suggest an enhancement! Please search [existing issues](https://github.com/google-gemini/gemini-cli/issues) to see if a similar feature has already been requested.
+
+  - type: textarea
+    id: feature
+    attributes:
+      label: What would you like to be added?
+      description: A clear and concise description of the enhancement.
+    validations:
+      required: true
+
+  - type: textarea
+    id: rationale
+    attributes:
+      label: Why is this needed?
+      description: A clear and concise description of why this enhancement is needed.
+    validations:
+      required: true
+
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional context
+      description: Add any other context or screenshots about the feature request here.