Add option to get data from a particular extract

[RaczeQ]

Allow users to get data from a given extract by name. Raise error if extract is not found and maybe suggest nearest names if there is a typo. Take OSM extract source from PbfFileReader init.

convert_extract_to_geodataframe(extract_name: str, ...)
convert_extract_to_parquet(extract_name: str, ...)

[RaczeQ]

TODO:

• Refactor OpenStreetMapExtract to contain name and parent fields
• Add function for displaying a tree of available extracts (both in Python and in CLI)
• Add name matching with existing extracts
• Keep existing IDs for cache compatibility