docs: Add Services reference (#1548)

www/docs/docusaurus.config.js

@@ -53,8 +53,14 @@ module.exports = {
       },
       items: [
         {
-          href: "https://docs.medusajs.com",
-          label: "Introduction",
+          type: "docSidebar",
+          sidebarId: "tutorialSidebar",
+          label: "Docs"
+        },
+        {
+          type: "docSidebar",
+          sidebarId: "servicesSidebar",
+          label: "Services Reference",
         },
         {
           href: `https://docs.medusajs.com/api/store`,
@@ -132,7 +138,7 @@ module.exports = {
           routeBasePath: "/",
           remarkPlugins: [
             [require('@docusaurus/remark-plugin-npm2yarn'), {sync: true}],
-          ],
+          ]
         },
         theme: {
           customCss: require.resolve("./src/css/custom.css"),

www/docs/sidebars.js

@@ -127,16 +127,9 @@ module.exports = {
               ]
             },
             {
-              type: "category",
-              label: 'Services',
-              collapsed: false,
-              items: [
-                {
-                  type: "doc",
-                  id: "advanced/backend/services/create-service",
-                  label: "Create a Service"
-                },
-              ]
+              type: "doc",
+              id: "advanced/backend/services/create-service",
+              label: "Create a Service"
             },
             {
               type: "category",
@@ -395,4 +388,10 @@ module.exports = {
       ],
     },
   ],
+  servicesSidebar: [
+    {
+      type: 'autogenerated',
+      dirName: 'references/services/classes', // generate sidebar from the docs folder (or versioned_docs/<version>)
+    },
+  ]
 }