feat(tests): added testing package, overhauled tests (#2586) #7618

Job	Run time
Detect Version	4s
Test and Build / Test and Build	2m 39s
Check Docs Changes	0s
Build AMD64 (./docker/realtime.Dockerfile, ghcr.io/simstudioai/realtime, ECR_REALTIME)	1m 46s
Build AMD64 (./docker/db.Dockerfile, ghcr.io/simstudioai/migrations, ECR_MIGRATIONS)	1m 54s
Build AMD64 (./docker/app.Dockerfile, ghcr.io/simstudioai/simstudio, ECR_APP)	1m 56s
Build ARM64 (GHCR Only)	0s
Process Docs	0s
Create GHCR Manifests	0s
Build AMD64 (./docker/app.Dockerfile, ghcr.io/simstudioai/simstudio, ECR_APP)	2m 3s
Build AMD64 (./docker/realtime.Dockerfile, ghcr.io/simstudioai/realtime, ECR_REALTIME)	1m 52s
Build ARM64 (GHCR Only)	-34148s
Check Docs Changes	-34317s
Detect Version	4s
Build AMD64 (./docker/db.Dockerfile, ghcr.io/simstudioai/migrations, ECR_MIGRATIONS)	1m 54s
Test and Build / Test and Build	2m 39s
Process Docs	-1s
Create GHCR Manifests	-1s
	-67456s

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