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/homarr/homarr-deployment.yaml

@@ -0,0 +1,41 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: homarr
+  namespace: homarr
+  labels:
+    app: homarr
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: homarr
+  template:
+    metadata:
+      labels:
+        app: homarr
+    spec:
+      securityContext:
+        fsGroup: 1000
+      containers:
+        - name: homarr
+          image: ghcr.io/homarr-labs/homarr:latest
+          imagePullPolicy: Always
+          env:
+            - name: SECRET_ENCRYPTION_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: homarr-secret
+                  key: SECRET_ENCRYPTION_KEY
+          ports:
+            - containerPort: 7575
+              protocol: TCP
+          volumeMounts:
+            - name: homarr-data
+              mountPath: /appdata
+            - name: homarr-data
+              mountPath: /app/data
+      volumes:
+        - name: homarr-data
+          persistentVolumeClaim:
+            claimName: homarr-pvc