refactor(cluster)!: Update flux installation and upgrade method

Other changes include:
- Rename cluster/base to cluster/flux
- Add config and charts fluxtomizations
- Update scripts and taskfiles to reflect changes

.github/renovate.json5

@@ -8,15 +8,6 @@
   "schedule": [
     "every weekend"
   ],
-  // set up ignored deps
-  "ignoreDeps": [
-    "ghcr.io/fluxcd/helm-controller",
-    "ghcr.io/fluxcd/image-automation-controller",
-    "ghcr.io/fluxcd/image-reflector-controller",
-    "ghcr.io/fluxcd/kustomize-controller",
-    "ghcr.io/fluxcd/notification-controller",
-    "ghcr.io/fluxcd/source-controller"
-  ],
   "pre-commit": {
     "enabled": true
   },