ci(issues): add supporter priority comment

.github/workflows/issue-welcome.yml

@@ -0,0 +1,24 @@
+name: Welcome new issues
+
+on:
+  issues:
+    types: [opened]
+
+permissions:
+  issues: write
+
+jobs:
+  supporter-priority-note:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Post supporter priority note
+        env:
+          GH_TOKEN: ${{ github.token }}
+          GH_REPO: ${{ github.repository }}
+          ISSUE_NUMBER: ${{ github.event.issue.number }}
+        run: |
+          gh issue comment "$ISSUE_NUMBER" --repo "$GH_REPO" --body-file - <<'EOF'
+          Thank you for opening this issue.
+
+          If you support OpenCADStudio on [Patreon](https://www.patreon.com/HakanSeven12), send me either your GitHub username or this issue number in a Patreon message. After I verify your support, I will prioritize the issue.
+          EOF