ci: integrate openwrt-bot-worker for formalities validation

- Enable comments to give contributors instant feedback
- Disable stale bot by default (can be enabled at any time)
- Run package test builds only when the formalities check succeeds

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

.github/formalities.json

@@ -0,0 +1,35 @@
+{
+  "check_branch": true,
+  "check_merge_commits": true,
+  "check_noreply_email": true,
+  "check_signoff": true,
+  "check_signature": true,
+  "allow_autosquash": true,
+  "enable_comments": true,
+  "show_force_push_tip": true,
+  "max_subject_len_soft": 60,
+  "max_subject_len_hard": 80,
+  "max_body_line_len": 100,
+  "warn_duplicate_body": true,
+  "warn_generic_subjects": true,
+  "require_release_notes": true,
+  "require_body": true,
+  "check_openwrt_spelling": true,
+  "check_pkg_version": true,
+  "check_crlf": true,
+  "check_trailing_newline": true,
+  "add_package_label": true,
+  "drop_package_label": true,
+  "branch_labeling": true,
+  "check_openwrt_meta": true,
+  "check_conffiles": true,
+  "check_uci_config": true,
+  "check_space_after_assignment": true,
+  "check_missing_colon": true,
+  "check_makefile_indentation": true,
+  "check_pkg_name_reuse": true,
+  "check_patch_headers": true,
+  "check_pkg_release": "warning",
+  "require_linked_github_account": true,
+  "enable_stale_bot": false
+}

.github/workflows/formal.yml

@@ -1,18 +0,0 @@
-name: Test Formalities
-
-on:
-  pull_request:
-
-permissions:
-  contents: read
-  pull-requests: write
-
-jobs:
-  formalities:
-    name: Test Formalities
-    uses: openwrt/actions-shared-workflows/.github/workflows/formal.yml@main
-    # with:
-    #   # Post formality check summaries to the PR.
-    #   # Repo's permissions need to be updated for actions to modify PRs:
-    #   # https://docs.github.com/en/rest/issues/comments?apiVersion=2022-11-28#create-an-issue-comment
-    #   post_comment: true

.github/workflows/multi-arch-test-build.yml

@@ -3,7 +3,25 @@ name: Feeds Package Test Build
 on:
   pull_request:
 
+permissions:
+  contents: read
+  checks: read
+
 jobs:
+  wait-for-formalities:
+    name: Wait for FormalityCheck
+    runs-on: ubuntu-slim
+    steps:
+      - name: Wait for Check Run
+        uses: lewagon/wait-on-check-action@v1.8.1
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          check-name: 'FormalityCheck / Git & Commits'
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          wait-interval: 5
+
   build:
     name: Feeds Package Test Build
+    needs: wait-for-formalities
     uses: openwrt/actions-shared-workflows/.github/workflows/multi-arch-test-build.yml@main
+