feat(gitlab): access, membership, and user-admin operations (#5710) #22410

Job	Run time
Build AMD64 (./docker/realtime.Dockerfile, ghcr.io/simstudioai/realtime, ECR_REALTIME)	56s
Detect Version	4s
Build AMD64 (./docker/pii.Dockerfile, ghcr.io/simstudioai/pii, ECR_PII)	2m 34s
Build AMD64 (./docker/db.Dockerfile, ghcr.io/simstudioai/migrations, ECR_MIGRATIONS)	26s
Build AMD64 (./docker/app.Dockerfile, ghcr.io/simstudioai/simstudio, ECR_APP)	5m 45s
Test and Build / Build App	45s
Test and Build / Lint and Test	46s
Build ARM64 (GHCR Only)	0s
Migrate Dev DB	-1s
Check Docs Changes	0s
Deploy Trigger.dev (Dev)	0s
Build Dev ECR	-1s
Migrate DB / Apply Database Migrations	36s
Promote Images	18s
Process Docs	0s
Create GHCR Manifests	0s
Create GitHub Release	0s
	12m 8s

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