feat: move opkssh and warpgate into plugins (C3)

package.json

@@ -71,7 +71,6 @@
     "drizzle-orm": "^0.45.2",
     "express": "^5.2.1",
     "guacamole-lite": "^1.2.0",
-    "js-yaml": "^5.2.3",
     "jsonwebtoken": "^9.0.3",
     "jszip": "^3.10.2",
     "motion": "^13.1.1",
@@ -131,7 +130,6 @@
     "@types/cors": "^2.8.19",
     "@types/express": "^5.0.6",
     "@types/guacamole-common-js": "^1.5.5",
-    "@types/js-yaml": "^4.0.9",
     "@types/jsonwebtoken": "^9.0.10",
     "@types/multer": "^2.2.0",
     "@types/node": "^26.2.0",