docs(migrate): Migrate to ZITADEL (#5625)

* docs(guide): migration process guide

* outline users

* intro

* wip

* wip

* wip - basics

* structure migrate

* importing users

* structure

* sidebar

* move technical considerations to intro

* update users

* update sidebar

* migrate from auth0

* Apply suggestions from code review

Co-authored-by: Fabi <fabienne.gerschwiler@gmail.com>

* remove mermaid

* add concepts

* replace bulk user

* add note on code snippets

---------

Co-authored-by: Fabi <fabienne.gerschwiler@gmail.com>

docs/sidebars.js

@@ -105,6 +105,24 @@ module.exports = {
         },
       ],
     },
+    {
+      type: "category",
+      label: "Migrate",
+      collapsed: false,
+      items: [
+        "guides/migrate/introduction",
+        "guides/migrate/users",
+        {
+          type: "category",
+          label: "Sources",
+          collapsed: true,
+          items: [
+            "guides/migrate/sources/zitadel-v1",
+            "guides/migrate/sources/auth0",
+          ]
+        },
+      ]
+    },
     {
       type: "category",
       label: "Integrate",
@@ -154,7 +172,6 @@ module.exports = {
             "guides/integrate/access-zitadel-apis",
             "guides/integrate/access-zitadel-system-api",
             "guides/integrate/event-api",
-            "guides/integrate/export-and-import",
             {
               type: "category",
               label: "Example Code",