Add blacklist option for "player" query argument

[yqs112358]

For example, on servers that use carpet mod, those bot-player's statistics will contaminate existing data in leaderboard such as "play_time":

So, I think it world be great if a blacklist option for "player" argument is availble in configuration file, which seems like:

[query]
player_blacklist = ["playera", "playerb", "bot_*", "*_bot"]

and it will be applied to each query to filter certain players out of the result.

[kr8gz]

Thank you for the suggestions — I'll figure out how I can add this to the next update as well once my exams are over 🙂