Add PR commenting to workflow

Author: benjamin-maynard

.github/workflows/FAILURE.md

@@ -0,0 +1 @@
+:no_entry_sign: Some tests failed. See [run](https://github.com/benjamin-maynard/kubernetes-cloud-mysql-backup/actions/runs/{workflow_id}) for more details :poop:

.github/workflows/SUCCESS.md

@@ -0,0 +1 @@
+:white_check_mark: All tests successfully passed. See [run](https://github.com/benjamin-maynard/kubernetes-cloud-mysql-backup/actions/runs/{workflow_id}) for more details :fire:

.github/workflows/run-pr-tests.yaml

@@ -425,4 +425,19 @@ jobs:
           # Remove /tmp/world.sql and .age
           echo "Removing /tmp/world.sql and /tmp/world.sql.age"
           rm /tmp/world.sql
-          rm /tmp/world.sql.age
+          rm /tmp/world.sql.age
+      -
+        name: Comment on PR with Successful
+        uses: benjamin-maynard/comment-on-pr@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          filename: .github/workflows/SUCCESS.md
+      -
+        name: Comment on PR with Failure
+        uses: benjamin-maynard/comment-on-pr@master
+        if: ${{ failure() }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          filename: .github/workflows/FAILURE.md