Add Baserow, LabCA, and LobeHub installers

Add container templates, install scripts, and metadata for Baserow, LabCA, and LobeHub. New ct/*.sh scripts provide container build and update logic (fetching GitHub releases, backup/restore, build steps). New install/*.sh scripts install dependencies, configure PostgreSQL/Node/uv/PNPM as needed, run migrations, and create systemd services for each app. Corresponding json/*.json entries add metadata (ports, resource defaults, docs, and notes) for UI/registry integration.

json/labca.json

@@ -0,0 +1,42 @@
+{
+    "name": "LabCA",
+    "slug": "labca",
+    "categories": [6],
+    "date_created": "2026-03-25",
+    "type": "ct",
+    "updateable": true,
+    "privileged": false,
+    "interface_port": 3000,
+    "documentation": "https://github.com/hakwerk/labca",
+    "website": "https://github.com/hakwerk/labca",
+    "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/labca.webp",
+    "config_path": "/etc/labca/config.json",
+    "description": "LabCA is a standalone web GUI for managing ACME certificate authorities like step-ca, providing dashboard, certificate overview, and admin management.",
+    "install_methods": [
+        {
+            "type": "default",
+            "script": "ct/labca.sh",
+            "resources": {
+                "cpu": 1,
+                "ram": 512,
+                "hdd": 2,
+                "os": "Debian",
+                "version": "13"
+            }
+        }
+    ],
+    "default_credentials": {
+        "username": null,
+        "password": null
+    },
+    "notes": [
+        {
+            "text": "On first access, you will be prompted to create an admin account and configure the database connection to your step-ca instance.",
+            "type": "info"
+        },
+        {
+            "text": "LabCA standalone requires a MySQL-backed step-ca instance to connect to.",
+            "type": "warning"
+        }
+    ]
+}