Write app manifests to local system

[JamWils]

As a user when I stop running gitops run for the first time against an application path. I will see the manifests for that application in my cluster folder, along side the bootstrap and weave-gitops dashboard. E.g. pod-info flux manifests.

Acceptance Criteria

In the file path clusters/my-cluster I should see the following yaml files:

1. If I am running against an application folder I expect to see a new yaml file <folder-name>-kustomization.yaml in the above directory.

In Scope?

Should we detect if there is already a kustomization for that app on the cluster? If there is one then don't create the flux kustomization. Or do we wait for phase 2?