update issue templates for new RFC repo

.github/ISSUE_TEMPLATE/---02-feature-request.yml

@@ -1,50 +0,0 @@
-name: "\U0001F4A1 Feature Request"
-description: 'Submit an RFC or suggest an idea for this project'
-title: "\U0001F4A1 RFC: "
-labels: ['feature']
-assignees: []
-body:
-  - type: markdown
-    attributes:
-      value: Thanks for taking the time to suggest a new feature! Please fill out this form as completely as possible.
-  - type: textarea
-    attributes:
-      label: Background & Motivation
-      description: |
-        A quick, clear and concise description of what the problem is. 
-        **Please include links to relevant issues, Discord convos, and anything else.**
-      placeholder: I want to be able to...
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Proposed Solution
-      description: Your take on one (or more) possible solution(s) to problem.
-      value: |
-        ### Possible solutions
-
-        ### Alternatives considered
-
-        ### Risks, downsides, and/or tradeoffs
-
-        ### Open Questions
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Detailed Design
-      description: |
-        🛑 **Just looking for feedback on an idea? Leave this section blank.**
-
-        Otherwise, explain the exact steps required to implement this change.
-        Include specific details that would help someone implement this feature.
-  - type: checkboxes
-    attributes:
-      label: Help make it happen!
-      description: 'Tip: RFCs with contributing authors are much more likely to get done!'
-      options:
-        - label: I am willing to submit a PR to implement this change.
-        - label: I am willing to submit a PR to implement this change, but would need some guidance.
-        - label: I am not willing to submit a PR to implement this change.
-    validations:
-      required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: 💡 Ideas, Suggestions and RFCs
+    url: https://github.com/withastro/rfcs
+    about: Propose and discuss future improvements to Astro
   - name: 👾 Chat
     url: https://astro.build/chat
     about: Our Discord server is active, come join us!