Adds zulip notification step

Author: edwardcrichton

.github/workflows/gradle.yml

@@ -38,3 +38,14 @@ jobs:
                     ORG_GRADLE_PROJECT_signingInMemoryKeyPassword: ${{ secrets.SIGNING_IN_MEMORY_KEY_PASSWORD }}
                 run: |
                     ./gradlew --stacktrace -PMauroSnapshotRepositoryUsername=${{secrets.MAURO_SNAPSHOT_REPOSITORY_USERNAME}} -PMauroSnapshotRepositoryPassword=${{secrets.MAURO_SNAPSHOT_REPOSITORY_PASSWORD}} publishAllPublicationsToMauroSnapshotRepositoryRepository
+            -   name: Send a stream message
+                if: success() || failure()
+                uses: zulip/github-actions-zulip/send-message@v1
+                with:
+                    api-key: ${{ secrets.ZULIP_API_KEY }}
+                    email: "githubactionsbot-bot@maurodatamapper.zulipchat.com"
+                    organization-url: "https://maurodatamapper.zulipchat.com"
+                    to: "build/github-actions"
+                    type: "stream"
+                    topic: "${{github.repository}}"
+                    content: "${{ job.status == 'success' && ':check_mark:' || ':cross_mark:' }} ${{github.repository}} : **${{github.ref}}**\nGitHub Actions build result: **${{ job.status }}**\n${{ github.event.pull_request.html_url || github.event.head_commit.url }}"