refactor(bruno): reorganize file structure from bruno-yaml to flat bruno directory

- Move all files from bruno-yaml/* to bruno/*
- Maintains existing directory structure within categories
- Updates bruno/user/auth files with OAuth2 refresh token flow
- Updates bruno/user/profile files for user profile management
- Adds bruno/dashboard/ directory with dashboard API tests
- Preserves all existing test scenarios and OpenCollection YAML format
- No functional changes - file reorganization only

bruno/user/admin/Update User Max Devices.yml

@@ -0,0 +1,27 @@
+info:
+  name: Update User Max Devices
+  type: http
+  seq: 6
+http:
+  method: PUT
+  url: '{{base_url}}/api/auth/users/{{user_id}}/max-devices'
+  auth: inherit
+
+docs: |-
+  ## Update User Max Devices (Admin)
+  
+    Updates the maximum number of devices a user can register.
+  
+    **Method:** PUT
+  
+    **Endpoint:** /api/auth/users/:id/max-devices
+  
+    **Authentication:** Required (Admin only)
+  
+    **URL Parameters:**
+    - `id` (string): User ID (UUID)
+  
+    **Request Body:**
+    ```json
+    {
+      "max_devices": 10