Draft: Migrate to modern configuration

Based on !26 (merged)

Worker configuration field key mapping

# Worker configuration field key mapping

## PDF export

- page_type: element.page_type
- line_type: element.line_type
- only_pages: transcription.only_pages
- transcription_source: transcription.source
- order_by_name: ordering.by_name
- name_pdf_with_id: naming.with_id

## CSV export

- element_type: element.type
- recursive: element.recursive
- with_classes: classification.export
- classification_worker_version: classification.source
- with_metadata: metadata.export
- with_parent_metadata: metadata.parent
- with_transcriptions: transcription.export
- transcriptions_worker_version: transcription.source
- with_entities: entity.export
- entities_worker_version: entity.source


## DOCX export

- page_type: element.page_type
- folder_type: element.folder_type
- line_type: element.line_type
- merge: transcription.merge
- transcription_worker_run: transcription.worker_run
- transcription_worker_version: transcription.worker_version

## PageXML export

- page_type: element.page_type
- paragraph_type: element.paragraph_type
- line_type: element.line_type
- transcription_source: transcription.source