[2024-06-03] Added: New endpoints for external record mappings

Endpoint: /api/v1/external_record_mappings

Method: GET

Change: Endpoint to get a list of all objects for which a mapping (shyftplan ID to ID in the external system) exists (limited by the filters that you set)

Endpoint: /api/v1/external_record_mappings

Method: POST

Change: Endpoint to create a mapping (shyftplan ID to ID in the external system) for an object in shyftplan

Endpoint: /api/v1/external_record_mappings/{id}

Method: GET

Change: Endpoint to get the mapping (shyftplan ID to ID in the external system) for an object in shyftplan

Endpoint: /api/v1/external_record_mappings/{id}

Method: PUT

Change: Endpoint to change/update the mapping (shyftplan ID to ID in the external system) for an object in shyftplan

Endpoint: /api/v1/external_record_mappings/{id}

Method: DELETE

Change: Endpoint to remove the mapping (shyftplan ID to ID in the external system) for an object in shyftplan