ci: disallow changes to these directories

Author: Jiralite

.github/workflows/supported-versions-only.yml

@@ -0,0 +1,24 @@
+name: Validate Supported API Versions
+on:
+  pull_request:
+    paths:
+      - 'gateway/v6.ts'
+      - 'gateway/v8.ts'
+      - 'payloads/v6/**'
+      - 'payloads/v8/**'
+      - 'rest/v6/**'
+      - 'rest/v8/**'
+      - 'rpc/v8.ts'
+      - 'utils/v8.ts'
+      - 'voice/v8.ts'
+      - 'v6.ts'
+      - 'v8.ts'
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    name: Disallow unsupported API versions
+    steps:
+      - name: Block API changes
+        run: |
+          echo "::error title=Unsupported API Version modified::Please make changes to current API versions only."
+          exit 1