add badge generation

.github/workflows/build.yaml

@@ -59,3 +59,37 @@ jobs:
       uses: EnricoMi/publish-unit-test-result-action/windows@v2
       with:
         files: testresults\**\*.trx
+
+    - name: Set badge color
+      shell: bash
+      run: |
+        case ${{ fromJSON( steps.test-results.outputs.json ).conclusion }} in
+          success)
+            echo "BADGE_COLOR=31c653" >> $GITHUB_ENV
+            ;;
+          failure)
+            echo "BADGE_COLOR=800000" >> $GITHUB_ENV
+            ;;
+          neutral)
+            echo "BADGE_COLOR=696969" >> $GITHUB_ENV
+            ;;
+        esac
+
+    - name: Create badge
+      uses: emibcn/badge-action@808173dd03e2f30c980d03ee49e181626088eee8
+      with:
+        label: Tests
+        status: '${{ fromJSON( steps.test-results.outputs.json ).formatted.stats.tests }} tests, ${{ fromJSON( steps.test-results.outputs.json ).formatted.stats.runs }} runs: ${{ fromJSON( steps.test-results.outputs.json ).conclusion }}'
+        color: ${{ env.BADGE_COLOR }}
+        path: badge.svg
+
+    - name: Upload badge to Gist
+      # Upload only for main branch
+      if: >
+        github.event_name == 'workflow_run' && github.event.workflow_run.head_branch == 'main' ||
+        github.event_name != 'workflow_run' && github.ref == 'refs/heads/main'
+      uses: andymckay/append-gist-action@6e8d64427fe47cbacf4ab6b890411f1d67c07f3e
+      with:
+        token: ${{ secrets.GIST_TOKEN }}
+        gistURL: https://gist.githubusercontent.com/{user}/{id}
+        file: badge.svg