Restructure the repo

[boredabdel]

Discussed structure with Mark at the top level

gateway
ingress
services (mci service)

[boredabdel]

Repo is almost how it should be

High-level structure as it should be

-gateway
---multi-cluster
---single-cluster(missing)
-images
-ingress
---multi-cluster
---single-cluster
-service-directory
-services
---multi-cluster
---single-cluster

For now:

• Archive is at the root. this contains cleaned files. to be removed at some point
• gateway/gke-gateway-controller is there to not break public docs. To be cleaned up