Capture mesh-catalog at feat/r4g (2246ccc4) with the templates its manifests name and its predefined.json, and lay the copy out as a repository's root

The catalogue's manifests moved their content into template files and fall back to predefined keys, so a copy of
module.json alone no longer passes the catalogue's own check; the bus's Dockerfile is gone from the catalogue.

testdata/beside/mesh-catalog/modules/desk-channel/module.json.captured

@@ -45,6 +45,14 @@
   "tools": [
     "desk_channel_status"
   ],
+  "config": {
+    "desktop-machines": {
+      "type": "list",
+      "description": "The machines, by node name, whose desktop shows the operator's questions and notifications, in the order they are tried; empty shows them on none.",
+      "trusted": true,
+      "default": []
+    }
+  },
   "resources": [
     {
       "id": "account",
@@ -58,7 +66,8 @@
       "type": "directory",
       "mode": "0700",
       "owner": "desk-channel",
-      "place": "."
+      "place": ".",
+      "unknown": "program"
     },
     {
       "id": "settings",
@@ -66,8 +75,9 @@
       "path": "${dir:state}/settings.json",
       "mode": "0600",
       "owner": "desk-channel",
+      "takes-config": ["desktop-machines"],
       "merge": "json",
-      "content": "{\n  \"desktop-machines\": []\n}\n"
+      "template": "files/settings.json"
     }
   ],
   "build": {
@@ -85,6 +95,11 @@
         "env": {
           "MESH_DESK_SETTINGS": "${dir:state}/settings.json"
         }
+      },
+      {
+        "name": "files",
+        "kind": "archive",
+        "from": "files"
       }
     ]
   }