feat: add Easy-Gate Cloudron package (Infrastructure) [#651]

Easy Gate 2.0.3 dashboard hub: multi-stage Go build (static binary on
cloudron/base 3.2.0), config persisted at /app/data/easy-gate.json with
real-time hot reload. No user model (IP-subnet groups only), so the app
ships behind the Cloudron auth proxy (httpAuth.type=proxy); localstorage
addon only, no database. Build validated green + smoke test HTTP 200.
Docs synced (STATUS/README/JOURNAL at 10/~57).

Ticket: https://projects.knownelement.com/issues/651

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Assisted-by: Crush:glm-5.2

Package-Workspace/Infrastructure/easy-gate/CloudronManifest.json

@@ -0,0 +1,25 @@
+{
+  "version": 1,
+  "manifestVersion": 2,
+  "type": "app",
+  "id": "io.cloudron.easygate",
+  "title": "Easy Gate",
+  "description": "Easy Gate is a web application that serves as the central hub for your self-hosted infrastructure. Services and notes are parsed in real time from a JSON/YAML config file (hot reload, no restarts), and items can be assigned to user groups that only see them based on their IP subnet. No database required.",
+  "author": "wiredlush",
+  "website": "https://github.com/wiredlush/easy-gate",
+  "contactEmail": "cloudron@tsys.dev",
+  "tagline": "A gate to your self-hosted infrastructure",
+  "version": "2.0.3",
+  "healthCheckPath": "/",
+  "httpPort": 8080,
+  "httpAuth": {
+    "type": "proxy"
+  },
+  "memoryLimit": 256,
+  "addons": {
+    "localstorage": true
+  },
+  "mediaLinks": [],
+  "changelog": "Initial Cloudron package for Easy Gate 2.0.3. Config-driven dashboard hub with no user model, fronted by the Cloudron authentication proxy; configuration persists at /app/data/easy-gate.json with real-time hot reload.",
+  "icon": "file://logo.png"
+}