Add migration scripts and manifests for GitLab and Gitea to Longhorn

- Create .vscode/settings.json for YAML schema validation.
- Add WISSENSBASIS.md for documentation on HomeLabScripts.
- Implement migration job for GitLab from NFS to Longhorn with migrate-to-longhorn.yaml and migrate-to-longhorn.sh.
- Add Gitea migration scripts and manifests for PostgreSQL to Longhorn.
- Create persistent volume claims and deployments for Gitea and Homarr.
- Set up namespaces and services for Homarr and Speedtest Tracker.
- Add secrets for Homarr and Speedtest Tracker with sensitive data.
- Configure Ingress for Speedtest Tracker with Traefik annotations.

Co-authored-by: Copilot <copilot@github.com>

k3s/apps/gitLab/manifest/gitlab-deployment.yaml

@@ -99,7 +99,7 @@ spec:
       volumes:
         - name: gitlab-data        # lokal (postgresql, redis, etc.)
           persistentVolumeClaim:
-            claimName: gitlab-data-pvc
+            claimName: gitlab-data-longhorn-pvc
 
         - name: gitlab-git         # NFS (Git-Repositories)
           persistentVolumeClaim:
@@ -107,7 +107,7 @@ spec:
 
         - name: gitlab-config      # lokal
           persistentVolumeClaim:
-            claimName: gitlab-config-pvc
+            claimName: gitlab-config-longhorn-pvc
 
         - name: gitlab-logs        # ephemeral
           emptyDir: {}