docs: add feature request issue template

Author: TheStack-ai

.github/ISSUE_TEMPLATE/feature.yml

@@ -0,0 +1,26 @@
+name: Feature Request
+description: Suggest a new feature or enhancement
+title: "[Feature]: "
+labels: [enhancement]
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem
+      description: What problem are you trying to solve?
+    validations:
+      required: true
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposed Solution
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional Context