feat: SCM-Manager Webhook Endpoint #8

Job	Run time
Build, test & lint UI code	55s
Build & cache Go code	3m 0s
Check changes to generated code	8m 39s
Ensure Go modules synchronicity	1m 1s
Lint Go code	1m 22s
Run unit tests with -race for Go packages	7m 34s
Run end-to-end tests (v1.28.2)	42m 50s
Run unit tests for Go packages	3m 48s
Run end-to-end tests (v1.27.6)	43m 15s
Run end-to-end tests (v1.26.9)	43m 43s
Run end-to-end tests (v1.25.14)	43m 38s
Process & analyze test artifacts	0s
	3h 19m 45s

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