Add blueprints for Adminer, Affine Pro, and AllTube with Docker Compose and metadata

- Added Adminer entry in meta.json with detailed description, logo, and relevant links.
- Introduced Docker Compose configurations for Adminer, Affine Pro, and AllTube services.
- Created template.toml files for each service with default variables for configuration.

meta.json

@@ -1926,5 +1926,58 @@
       "dns",
       "ad-blocking"
     ]
+  },
+  {
+    "id": "adminer",
+    "name": "Adminer",
+    "version": "4.8.1",
+    "description": "Adminer is a comprehensive database management tool that supports MySQL, MariaDB, PostgreSQL, SQLite, MS SQL, Oracle, Elasticsearch, MongoDB and others. It provides a clean interface for efficient database operations, with strong security features and extensive customization options.",
+    "logo": "logo.svg",
+    "links": {
+      "github": "https://github.com/vrana/adminer",
+      "website": "https://www.adminer.org/",
+      "docs": "https://www.adminer.org/en/plugins/"
+    },
+    "tags": [
+      "databases",
+      "developer-tools",
+      "mysql",
+      "postgresql"
+    ]
+  },
+  {
+    "id": "affinepro",
+    "name": "Affine Pro",
+    "version": "stable-780dd83",
+    "description": "Affine Pro is a modern, self-hosted platform designed for collaborative content creation and project management. It offers an intuitive interface, seamless real-time collaboration, and powerful tools for organizing tasks, notes, and ideas.",
+    "logo": "logo.png",
+    "links": {
+      "github": "https://github.com/toeverything/Affine",
+      "website": "https://affine.pro/",
+      "docs": "https://affine.pro/docs"
+    },
+    "tags": [
+      "collaboration",
+      "self-hosted",
+      "productivity",
+      "project-management"
+    ]
+  },
+  {
+    "id": "alltube",
+    "name": "AllTube",
+    "version": "latest",
+    "description": "AllTube Download is an application designed to facilitate the downloading of videos from YouTube and other video sites. It provides an HTML GUI for youtube-dl with video conversion capabilities and JSON API support.",
+    "logo": "logo.png",
+    "links": {
+      "github": "https://github.com/Rudloff/alltube",
+      "website": "https://github.com/Rudloff/alltube",
+      "docs": "https://github.com/Rudloff/alltube/wiki"
+    },
+    "tags": [
+      "media",
+      "video",
+      "downloader"
+    ]
   }
 ]