Replace issue templates with issue forms (#12373)

.github/ISSUE_TEMPLATE/3-feature-request.yml

@@ -0,0 +1,30 @@
+name: Feature request
+description: If RPCS3 lacks a feature you would like to see
+title: "[Feature request] Enter a title here"
+labels: []
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please do not ask for help or report compatibility regressions here, use [RPCS3 Discord server](https://discord.me/RPCS3) or [forums](https://forums.rpcs3.net/) instead.
+  - type: textarea
+    id: quick-summary
+    attributes:
+      label: Quick summary
+      description: Please briefly describe what feature you would like RPCS3 to have.
+    validations:
+      required: true
+  - type: markdown
+    attributes:
+      value: |
+        Please include the following information:
+        * What part of RPCS3 would be affected by your feature? (Gameplay, Debugging, UI, Patches, Installation, CI etc.)
+        * Why your feature is important to RPCS3.
+        * If the feature is implemented in other projects, attach screenshots.
+  - type: textarea
+    id: details
+    attributes:
+      label: Details
+      description: Please describe the feature as accurately as possible.
+    validations:
+      required: false