feat(homelab)!: add longhorn, separate gitea_admin from main user

nix/homelab/helm/helmfile.yaml

@@ -7,6 +7,8 @@ repositories:
     url: https://itzg.github.io/minecraft-server-charts
   - name: gitea-charts
     url: https://dl.gitea.com/charts
+  - name: longhorn
+    url: https://charts.longhorn.io
 
 releases:
   # Load Balancer
@@ -40,6 +42,15 @@ releases:
     values:
       - values/gitea.yaml
 
+  # Storage
+  - name: longhorn
+    namespace: longhorn-system
+    chart: longhorn/longhorn
+    version: 1.10.1
+    values:
+      - defaultSettings:
+          defaultReplicaCount: 1
+
   # Minecraft
   - name: minecraft-main
     namespace: minecraft