Automatically create a Kubernetes cluster during project creation

Description

Users that create a new project are encouraged to use Review Apps and to deploy their applications on a Kubernetes cluster. This requires adding a cluster to the project in a second moment. Adding the ability to create a new cluster (or to select an existing one) during the new project creation flow will make the experience easy.

Proposal

Add the ability to specify that you want to create a new Kubernetes cluster during the new project creation.

• add an option in the project creation form to add a Kubernetes cluster to the new project (disabled by default)
• if the user doesn't check it, the actual flow is kept and the user is redirected to the project overview
• if the user checks it, the actual flow happens but then the user is redirected to the cluster creation page (choice between GKE and existing cluster), so the cluster creation can be leveraged