Allow parsers to declare uses remote, and remote ocr_mode (#13634)

* uses_remote_service + allow_remote to allow opt-in / out of remote OCR

* Add to parser dev docs

* remote_ocr_mode config setting

* Checks for remote_ocr_mode and fix import

* Update config.component.spec.ts

* More tests for remote_ocr_mode

* Docs for remote_ocr_mode

* Ok, wire up the remote_ocr_mode with allow_remote for consumer

* Update consumer.py

* Format remote OCR mode check tests

* Use get_choice_from_env

docs/configuration.md

@@ -2066,6 +2066,18 @@ password. All of these options come from their similarly-named [Django settings]
 
     Defaults to None.
 
+#### [`PAPERLESS_REMOTE_OCR_MODE=<str>`](#PAPERLESS_REMOTE_OCR_MODE) {#PAPERLESS_REMOTE_OCR_MODE}
+
+: Which documents are sent to the remote OCR engine.
+
+    - `always`: every document of a supported file type is sent to the remote
+      engine, bypassing the local OCR engine.
+    - `workflow_only`: documents are processed locally unless a workflow
+      explicitly enables remote OCR for them, letting you use the remote engine
+      selectively.
+
+    Defaults to "always".
+
 ## AI {#ai}
 
 #### [`PAPERLESS_AI_ENABLED=<bool>`](#PAPERLESS_AI_ENABLED) {#PAPERLESS_AI_ENABLED}