docs(coco): update readme.md

manager-dashboard/user_scripts/README.md

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+## DropBox
+### Prerequisites
+
+- Create account: https://www.dropbox.com/register
+- Create new App: https://www.dropbox.com/developers/apps
+    - Choose an API: Scoped access
+    - Choose the type of access you need: Full Dropbox
+    - Name your app: Mapswipe COCO
+- Update `Permission type`
+    - Go to the app settings
+    - Click **Scoped App**
+    - Select
+        - files.metadata.read
+        - files.content.write
+        - files.content.read
+        - sharing.write
+        - sharing.read
+    - Submit
+- Generate new access token:
+    - Go to the app settings
+    - Click **Generated access token**
+- Install uv on your system: https://docs.astral.sh/uv/getting-started/installation/
+- Download the [generate_coco_from_dropbox.py](user_scripts/generate_coco_from_dropbox.py) script
+
+- Run the script
+    ```bash
+    # Help
+    uv run generate_coco_dropbox.py --help
+
+    # Sample
+    uv run generate_coco_dropbox.py "DROPBOX_ACCESS_TOKEN" "FOLDER_PATH_IN_DROPBOX" "DESTINATION_EXPORT_FILE_NAME_IN_DROPBOX"
+
+    # Example
+    uv run generate_coco_dropbox.py sl.yourAccessTokenHere “/COCO TEST” “coco_export.json”
+    ```
+- Download the coco_export.json from the dropbox