feat: migrate CSI drivers to dedicated storage project (#45)

- Migrate csi-cephfs from Terraform to ArgoCD
- Migrate csi-cephrbd from Terraform to ArgoCD
- Create dedicated storage project and ApplicationSet for CSI drivers
- Add csi-* pattern matching in storage ApplicationSet
- Remove CSI apps from platform project to separate concerns

Reviewed-on: #45

apps/base/csi-cephrbd/kustomization.yaml

@@ -0,0 +1,9 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - namespace.yaml
+  - vaultauth.yaml
+  - vaultstaticsecret.yaml
+  - storageclass.yaml