chore(github): update issue templates

.github/ISSUE_TEMPLATE/feature-request-v3.yml

@@ -0,0 +1,20 @@
+name: "🚀 Feature request (v3)"
+description: Suggest an idea or enhancement for the module (v3 only).
+labels: ["triage", "enhancement", "v3"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Before requesting a feature, please make sure that you have read through our [v3 documentation](https://ui3.nuxt.dev/) and existing [issues](https://github.com/nuxt/ui/issues?q=is%3Aissue%20is%3Aopen%20sort%3Aupdated-desc%20label%3Av3).
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: A clear and concise description of what you think would be an helpful addition to the module, including the possible use cases and alternatives you have considered. If you have a working prototype or module that implements it, please include a link.
+    validations:
+      required: true
+  - type: textarea
+    id: additonal
+    attributes:
+      label: Additional context
+      description: If applicable, add any other context or screenshots here.