feat: convert ssh tunnels into a plugin

plugins/automations/manifest.json

@@ -28,7 +28,8 @@
   ],
   "optionalDependencies": {
     "snippets": "^1.0.0",
-    "fleets": "^1.0.0"
+    "fleets": "^1.0.0",
+    "tunnels": "^1.0.0"
   },
   "requires": [
     {
@@ -40,6 +41,11 @@
       "service": "fleets.access",
       "versionRange": "^1.0.0",
       "optional": true
+    },
+    {
+      "service": "tunnels.access",
+      "versionRange": "^1.0.0",
+      "optional": true
     }
   ],
   "contributes": {