Add detailed position information to home_players and away_players dataframes

[DaanGro]

In the home_players and away_players dataframes from get_open_match (soon te be get_open_game) there is a column "position".
This column contains either of these 4 values: goalkeeper, defender, midfielder of forward.
More detailed information is available (for example: right back, left center back, right center back or left back instead of just defender).
I propose this gets it's own column in the home_players and away_players dataframe with the name "position_detailed".

Statsbomb created this visual that should have all positions:
(https://github.com/statsbomb/open-data/blob/master/doc/Open%20Data%20Events%20v4.0.0.pdf)

The get_open_match function uses the sportec parser but it would be nice to add this for all providers if it is available

[Alek050]

Hi @DaanGro ,

I like this setup. I think, eventually a more object based approach would be more pythonic and able to cover all the possibilities (such als also including "field player"/"goalkeeper" if no other position information is available). But I think the solution you propose is a lot in line with the dataframe approach we use throughout the whole package and very doable to add on top of the current code base.

For the different providers, I think Sportec Solutions is the main one with specified positions, but could you also go trhough the other event and tracking data parsers (since they all individually create players_df) to make sure we are complete for the full package?

It would also be nice to add a small part about these positions in the documentation together with the picture you have above.