feat: add personal webhook notification backend #2679

Job	Run time
Linting and tests / Lint entire project	1m 25s
Linting and tests / Ensure database migrations drop columns the correct way	7s
Linting and tests / Lint database migrations	1m 13s
Linting and tests / Lint, test, and build frontend	1m 36s
Linting and tests / mypy	1m 33s
Linting and tests / Test technical documentation	22s
Linting and tests / Backend Tests: MySQL + RabbitMQ (RBAC enabled: True)	4m 31s
Linting and tests / Backend Tests: MySQL + RabbitMQ (RBAC enabled: False)	4m 26s
Linting and tests / Backend Tests: Plugin	41s
Linting and tests / Backend Tests: PostgreSQL + RabbitMQ (RBAC enabled: True)	4m 12s
Linting and tests / Backend Tests: SQLite + Redis (RBAC enabled: True)	3m 34s
Linting and tests / Backend Tests: PostgreSQL + RabbitMQ (RBAC enabled: False)	4m 9s
Linting and tests / Helm Chart Unit Tests	19s
Linting and tests / Backend Tests: SQLite + Redis (RBAC enabled: False)	3m 45s
Linting and tests / Unit tests - Migrators	25s
Snyk security scan / Snyk security scan	1m 13s
Linting and tests / Standard e2e tests (10.3.0) / Grafana: 10.3.0	8m 0s
Linting and tests / Standard e2e tests (11.2.0) / Grafana: 11.2.0	8m 22s
	49m 53s

Provide feedback