Additional player statistics

[simi2525]

Decide if statistics such as those found here when going to the "Statistics" tab

If we want to include these as well, modify the ultimatetennisstatistics scrapper to include this information.

A thing to consider is that these statistics are current and should only be used to predict current and future matches, when training a model on historical data we should not feed it this data since it would technically include future data. For example:
If we train on matched until 2015 and test on data from 2016, if we would use statistics such as Ace% that include data till the present it could leak information about future performance of players that would unfairly help the model predict accurately.