Add initial (trivial) pubsub module and faas module that supports pubsub

Relates #3 (closed)

Follow up MRs or split tickets for alerting and working dead letter queue

example/.gitlab-ci.yml

+include:
+  - template: Auto-DevOps.gitlab-ci.yml
+  - project: "uis/devops/continuous-delivery/ci-templates"
+    file: "/auto-devops/artifact-registry.yml"
+    ref: v4.0.0
+
+# Override the "build" job (imported from Auto-DevOps) to cd into this directory before building the docker image.
+build:
+  variables:
+    DOCKERFILE_PATH: ./example.Dockerfile
+
+variables:
+  DOCUMENTATION_DISABLED: "1"
+  DAST_DISABLED: "1"
+  TEST_DISABLED: "1"
+  LICENSE_MANAGEMENT_DISABLED: "1"