feat(workflows): set the status of PR build checks

.github/workflows/build_pull_request.yml

@@ -98,6 +98,8 @@ jobs:
     needs: prepare
     if: ${{ needs.prepare.outputs.isMultisrcChanged == '1' }}
     runs-on: ubuntu-latest
+    outputs:
+      status: ${{ steps.status.outputs.status }}
     strategy:
       matrix: ${{ fromJSON(needs.prepare.outputs.multisrcMatrix) }}
     steps:
@@ -127,11 +129,19 @@ jobs:
           arguments: assembleDebug
           cache-read-only: true
 
+      - name: Set status output
+        id: status
+        if: ${{ success() }}
+        run: |
+          echo "status=success" >> $GITHUB_OUTPUT
+
   build_individual:
     name: Build individual modules
     needs: prepare
     if: ${{ needs.prepare.outputs.isIndividualChanged == '1' }}
     runs-on: ubuntu-latest
+    outputs:
+      status: ${{ steps.status.outputs.status }}
     strategy:
       matrix: ${{ fromJSON(needs.prepare.outputs.individualMatrix) }}
     steps:
@@ -152,3 +162,36 @@ jobs:
         with:
           arguments: assembleDebug
           cache-read-only: true
+
+      - name: Set status output
+        id: status
+        if: ${{ success() }}
+        run: |
+          echo "status=success" >> $GITHUB_OUTPUT
+
+  status:
+    name: Workflow status
+    runs-on: ubuntu-latest
+    if: ${{ always() }}
+    needs: [prepare, build_individual, build_multisrc]
+    steps:
+      - name: Set the status of this workflow (used for branch protection rules)
+        env:
+          INDIVIDUAL_CHANGED: ${{ needs.prepare.outputs.isIndividualChanged }}
+          MULTISRC_CHANGED: ${{ needs.prepare.outputs.isMultisrcChanged }}
+          STATUS_INDIVIDUAL: ${{needs.build_individual.outputs.status}}
+          STATUS_MULTISRC: ${{needs.build_multisrc.outputs.status}}
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const isIndividualChanged = process.env.INDIVIDUAL_CHANGED == '1';
+            const isMultisrcChanged = process.env.MULTISRC_CHANGED == '1';
+
+            const individualStatus = !isIndividualChanged || process.env.STATUS_INDIVIDUAL == 'success';
+            const multisrcStatus = !isMultisrcChanged || process.env.STATUS_MULTISRC == 'success';
+
+            const success = individualStatus && multisrcStatus;
+
+            if (!success) {
+              core.setFailed('Build failed');
+            }