[ci] Add test github action

Add the test github action that executes the run_all_tests shell script
which in turn performs all tests and checks relevant for the project.

Author: jannowotsch

.github/workflows/tests.yml

@@ -0,0 +1,10 @@
+name: test
+on: push
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: bazelbuild/setup-bazelisk@v3
+      - run: scripts/run_all_tests.sh