add ubuntu status checks

.github/workflows/ubuntu.yml

@@ -20,3 +20,32 @@ jobs:
       run: swift build -v
     - name: Run tests
       run: swift test -v
+    - name: Status Check Success
+      if: ${{ success() }}
+      uses: Sibz/github-status-action@v1
+      with:
+        authToken: ${{secrets.GITHUB_TOKEN}}
+        context: 'ubuntu / unit tests'
+        description: 'Unit tests on ubuntu successed'
+        state: 'success'
+        sha: ${{github.event.pull_request.head.sha || github.sha}}
+    - name: Status Check Failure
+      if: ${{ failure() }}
+      uses: Sibz/github-status-action@v1
+      with:
+        authToken: ${{secrets.GITHUB_TOKEN}}
+        context: 'ubuntu / unit tests'
+        description: 'Unit tests on ubuntu failed'
+        state: 'failure'
+        sha: ${{github.event.pull_request.head.sha || github.sha}}
+  add_pending_status_check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Pending Status Check
+        uses: Sibz/github-status-action@v1
+        with:
+          authToken: ${{secrets.GITHUB_TOKEN}}
+          context: 'ubuntu / unit tests'
+          description: 'Running unit tests on ubuntu'
+          state: 'pending'
+          sha: ${{github.event.pull_request.head.sha || github.sha}}