[SYCL] Add windows testing triggered by a comment (#7704)

Trying to trigger windows build and testing if a specific comment is
posted.
The are complications:
1. For some reason, a workflow triggered by a comment is not displayed
in the PR status(where all github actions are displayed). So, trying to
update it manually.
2. The github hash provided for the default branch rather than for the
PR branch.

Author: romanovvlad

.github/workflows/sycl_windows_build_and_test.yml

@@ -7,6 +7,9 @@ on:
         type: string
         required: false
         default: "default"
+      build_ref:
+        type: string
+        required: false
 
 jobs:
   build:
@@ -26,6 +29,7 @@ jobs:
     - uses: actions/checkout@v3
       with:
         path: src
+        ref: ${{ inputs.build_ref || github.ref }}
         fetch-depth: 1
     - name: Register cleanup after job is finished
       uses: ./src/devops/actions/cleanup

.github/workflows/windows_test_comment_trigger.yml

@@ -0,0 +1,87 @@
+name: Test windows on the comment
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  windows_test_preparation:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.issue.pull_request && github.event.comment.body == '/start Windows testing' }}
+    steps:
+    - name: react_to_comment
+      uses: actions/github-script@v4
+      with:
+        script: |
+          const {owner, repo} = context.issue;
+          github.reactions.createForIssueComment({
+            owner,
+            repo,
+            comment_id: context.payload.comment.id,
+            content: "rocket",
+          });
+    - name: get_pr_sha
+      id: sha
+      uses: actions/github-script@v4
+      with:
+        result-encoding: string
+        script: |
+          const { owner, repo, number } = context.issue;
+          const pr = await github.pulls.get({
+            owner,
+            repo,
+            pull_number: number,
+          });
+          return pr.data.head.sha
+    - name: update_pr_status_pending
+      run: |
+          gh api --method POST -H "Accept: application/vnd.github+json" /repos/$OWNER/$REPO/statuses/$SHA -f state='pending' -f target_url='${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}' -f description='The build started2!' -f context='Windows pre-commit'
+          echo "REF == = = = = = = ${{ steps.sha.outputs.result }}"
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        OWNER: ${{ github.repository_owner }}
+        REPO: ${{ github.event.repository.name }}
+        SHA: ${{ steps.sha.outputs.result }}
+    outputs:
+      PR_SHA: ${{ steps.sha.outputs.result }}
+
+
+  windows_default:
+    name: Windows
+    needs: [windows_test_preparation]
+    if: github.repository == 'intel/llvm'
+    uses: ./.github/workflows/sycl_windows_build_and_test.yml
+    with:
+      build_ref: ${{ needs.windows_test_preparation.outputs.PR_SHA }}
+
+  windows_test_completion:
+    runs-on: ubuntu-latest
+    needs: [windows_default]
+    steps:
+    - name: update_pr_status_success
+      if: always() && success()
+      run: |
+          gh api --method POST -H "Accept: application/vnd.github+json" /repos/$OWNER/$REPO/statuses/$SHA -f state='success' -f target_url='${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}' -f description='The build started2!' -f context='Windows pre-commit'
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        OWNER: ${{ github.repository_owner }}
+        REPO: ${{ github.event.repository.name }}
+        SHA: ${{ steps.sha.outputs.result }}
+    - name: update_pr_status_failure
+      if: failure()
+      run: |
+          gh api --method POST -H "Accept: application/vnd.github+json" /repos/$OWNER/$REPO/statuses/$SHA -f state='failure' -f target_url='${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}' -f description='The build started2!' -f context='Windows pre-commit'
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        OWNER: ${{ github.repository_owner }}
+        REPO: ${{ github.event.repository.name }}
+        SHA: ${{ steps.sha.outputs.result }}
+
+  # windows_default:
+  #   runs-on: ubuntu-latest
+  #   needs: [windows_test_preparation]
+  #   steps:
+  #   - name: print_ref
+  #     run: |
+  #       echo "REF == = = = = = = ${{github.ref}}"
+  #       echo "REF == = = = = = = ${{ needs.windows_test_preparation.outputs.PR_SHA }}"