refactor: move submission endpoints to router

apps/api/app/main.py

@@ -364,8 +364,7 @@ def admin_reject_external_observation(
         raise HTTPException(status_code=409, detail=str(exc)) from exc
 
 
-@submissions_router.post("/api/v1/catch-reports", response_model=CatchReportAccepted, status_code=201)
-def create_catch_report(
+def _legacy_create_catch_report(
     payload: CatchReportCreate, request: Request, db: Db,
     idempotency_key: Annotated[str | None, Header()] = None,
 ) -> CatchReportAccepted:
@@ -440,8 +439,7 @@ def create_catch_report(
     return CatchReportAccepted(id=report.id, moderation_status=report.moderation_status.value, screenshot_upload_token=upload_token, idempotent=False)
 
 
-@submissions_router.post("/api/v1/catch-reports/{report_id}/screenshot", status_code=204, response_class=Response)
-def add_screenshot(
+def _legacy_add_screenshot(
     report_id: UUID, db: Db, screenshot: UploadFile = File(),
     upload_token: Annotated[str | None, Header(alias="X-Upload-Token")] = None,
 ) -> Response: