Route to get layout to apply

packages/strapi-plugin-content-manager/config/routes.json

@@ -1,5 +1,13 @@
 {
   "routes": [
+    {
+      "method": "GET",
+      "path": "/layout",
+      "handler": "ContentManager.layout",
+      "config": {
+        "policies": []
+      }
+    },
     {
       "method": "GET",
       "path": "/models",

packages/strapi-plugin-content-manager/controllers/ContentManager.js

@@ -7,6 +7,12 @@ const _ = require('lodash');
  */
 
 module.exports = {
+  layout: async (ctx) => {
+    const {source} = ctx.query;
+
+    return ctx.send(_.get(strapi.plugins, [source, 'config', 'layout'], {}));
+  },
+
   models: async ctx => {
     const pickData = (model) => _.pick(model, [
       'info',