docs: Improve feature request template and issue config

Author: amannn

.github/ISSUE_TEMPLATE/02_feature_request.yml

@@ -6,10 +6,16 @@ labels:
 body:
   - type: markdown
     attributes:
-      value: Thanks for taking the time to file a feature request! Please fill out this form completely.
+      value: Thanks for taking the time to improve next-intl!
   - type: markdown
     attributes:
-      value: Please keep in mind that if something doesn't work as expected, you might want to [create a bug report](https://github.com/amannn/next-intl/issues/new/choose) instead. Bug reports disguised as feature requests will be closed.
+      value: |
+        Please keep in mind:
+        - If you're looking for specific support with your project, you can consider asking for help on the [Next.js Discord](https://discord.com/invite/nextjs), [Stack Overflow](https://stackoverflow.com/questions/ask) or [GitHub discussions](https://github.com/amannn/next-intl/discussions) instead.
+        - If something doesn't work as expected, you might want to [create a bug report](https://github.com/amannn/next-intl/issues/new/choose) instead.
+        - Please double check the [docs](https://next-intl.dev) to see if your feature request is already supported.
+        - Please also check the [existing issues](https://github.com/amannn/next-intl/issues) to see if your feature request was already discussed.
+        If you have a feature request that has not been discussed yet, please fill out this form completely.
   - type: textarea
     attributes:
       label: Is your feature request related to a problem? Please describe.

.github/ISSUE_TEMPLATE/config.yml

@@ -3,9 +3,15 @@ contact_links:
   - name: View documentation
     url: https://next-intl.dev
     about: Check out the official docs for answers to common questions
-  - name: Get community support
+  - name: Get community support on the Next.js Discord
+    url: https://discord.com/invite/nextjs
+    about: Join the Next.js community on Discord to get real-time help and connect with other developers
+  - name: Get community support on Stack Overflow
     url: https://stackoverflow.com/questions/ask
-    about: Ask questions and discuss with other community members
+    about: Post your technical questions on Stack Overflow where experienced developers can help
+  - name: Get community support on GitHub Discussions
+    url: https://github.com/amannn/next-intl/discussions
+    about: Start a discussion to share ideas and ask questions
   - name: Get maintainer support
     url: https://github.com/sponsors/amannn?frequency=one-time
     about: Book a consulting session to get help with your specific project