Allow to group bookmarks in folders

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

docs/development/API/differences_in_mastoapi_responses.md

@@ -40,6 +40,7 @@ Has these additional fields under the `pleroma` object:
 - `parent_visible`: If the parent of this post is visible to the user or not.
 - `pinned_at`: a datetime (iso8601) when status was pinned, `null` otherwise.
 - `quotes_count`: the count of status quotes.
+- `bookmark_folder`: the ID of the folder bookmark is stored within (if any).
 
 The `GET /api/v1/statuses/:id/source` endpoint additionally has the following attributes:
 
@@ -65,6 +66,12 @@ Some apps operate under the assumption that no more than 4 attachments can be re
 
 Pleroma does not process remote images and therefore cannot include fields such as `meta` and `blurhash`. It does not support focal points or aspect ratios. The frontend is expected to handle it.
 
+## Bookmarks
+
+The `GET /api/v1/bookmarks` endpoint accepts optional parameter `folder_id` for bookmark folder ID.
+
+The `POST /api/v1/statuses/:id/bookmark` endpoint accepts optional parameter `folder_id` for bookmark folder ID.
+
 ## Accounts
 
 The `id` parameter can also be the `nickname` of the user. This only works in these endpoints, not the deeper nested ones for following etc.

docs/development/API/pleroma_api.md

@@ -283,6 +283,52 @@ See [Admin-API](admin_api.md)
     * `id`: the id of the status
 * Response: JSON, returns a list of Mastodon Status entities
 
+## `GET /api/v1/pleroma/bookmark_folders`
+### Gets user bookmark folders
+* Authentication: required
+
+* Response: JSON. Returns a list of bookmark folders.
+* Example response:
+```json
+[
+    {
+        "id": "9umDrYheeY451cQnEe",
+        "name": "Read later",
+        "emoji": "🕓",
+        "source": {
+          "emoji": "🕓"
+        }
+    }
+]
+```
+
+## `POST /api/v1/pleroma/bookmark_folders`
+### Creates a bookmark folder
+* Authentication: required
+
+* Params:
+    * `name`: folder name
+    * `emoji`: folder emoji (optional)
+* Response: JSON. Returns a single bookmark folder.
+
+## `PATCH /api/v1/pleroma/bookmark_folders/:id`
+### Updates a bookmark folder
+* Authentication: required
+
+* Params:
+    * `id`: folder id
+    * `name`: folder name (optional)
+    * `emoji`: folder emoji (optional)
+* Response: JSON. Returns a single bookmark folder.
+
+## `DELETE /api/v1/pleroma/bookmark_folders/:id`
+### Deletes a bookmark folder
+* Authentication: required
+
+* Params:
+    * `id`: folder id
+* Response: JSON. Returns a single bookmark folder.
+
 ## `/api/v1/pleroma/mascot`
 ### Gets user mascot image
 * Method `GET`