module: Add compendium folder

We currently only have a macro compendium, but
we might have more in the future (items, powers...).
All the Fabula Ultima compendium are also in folders.

Add a compendium folder and move the macro compendium within.

module.json

@@ -54,6 +54,7 @@
     "scripts/token_ui_adjust.mjs"
   ],
   "socket": true,
+
   "packs": [
     {
       "name": "Macros",
@@ -68,6 +69,14 @@
       "flags": {}
     }
   ],
+  "packFolders": [
+    {
+      "name": "Fabula Moletrina",
+      "sorting": "a",
+      "color": "#d3b719",
+      "packs": ["Macros"]
+    }
+  ],
 
   "license": "LICENSE",
   "readme": "README.md",