Report failures for build-and-publish-api-client

The code is mostly copied from the secondary-ci action. The email
credentials are already available in the GitHub repo.

Bug: T386387
Change-Id: Iefc709d482ef03895c09072fb40ddec211c00db7

Author: jakobw

.github/workflows/publishRestApiClient.yml

@@ -52,3 +52,18 @@ jobs:
                   echo "//registry.npmjs.org/:_authToken=${{ secrets.WMDE_NPM_AUTH_TOKEN }}" > ~/.npmrc
                   cd api-client/
                   npm publish --access public
+            - name: Send mail
+              if: ${{ failure() }}
+              uses: dawidd6/[email protected]
+              with:
+                  server_address: smtp.gmail.com
+                  server_port: 465
+                  username: ${{secrets.WMDE_CI_MAIL_USERNAME}}
+                  password: ${{secrets.WMDE_CI_MAIL_PASSWORD}}
+                  subject: Github Action job failed for Wikibase
+                  html_body: |
+                      Job build-and-publish-api-client failed!
+                      The failed job can be found <a href="https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}">here</a>.
+                      The job definition can be found <a href="https://github.com/${{ github.repository }}/actions/workflows/publishRestApiClient.yml">here</a>.
+                  to: [email protected]
+                  from: Wikibase Github Action CI