Remote ocr reprocess (#13636)

* Backend stuff for remote ocr reprocess, add to bulk edit pass in from ui settings

* Ok, frontend reprocess remote option

* Docs

docs/api.md

@@ -302,7 +302,8 @@ The following methods are supported:
 - `delete`
   - No `parameters` required
 - `reprocess`
-  - No `parameters` required
+  - Optional `parameters`: `{ "remote_ocr": true }` to send the documents to the
+    remote OCR engine, see [Remote OCR](usage.md#remote-ocr). Defaults to false.
 - `set_permissions`
   - Requires `parameters`:
     - `"set_permissions": PERMISSIONS_OBJ` (see format [above](#permissions)) and / or

docs/usage.md

@@ -1100,6 +1100,8 @@ By default, every document of a supported file type is sent to the remote engine
 [remote OCR mode](configuration.md#PAPERLESS_REMOTE_OCR_MODE) to `workflow_only`. Documents are then processed locally
 unless a workflow explicitly enables remote OCR for them, so you can limit the remote engine to particular documents.
 
+Setting the mode to `workflow_only` also allows the **Reprocess** actions to selectively use remote OCR for individual documents.
+
 ## Architecture
 
 Paperless-ngx consists of the following components: