Add the ability for the server admin to blacklist words

[AIMBOT312]

Add a universal always active word blacklist for custom words and chat

[AIMBOT312]

a list that the server admin can modify*

[Bios-Marcel]

Rough idea:

1. Add environment variable WORD_BLACKLIST_FILE

Adding the words via the env variables directly might be impractical to manage.#

2. Filter out words upon lobby creation, after parsing the wordlist, but don't throw any errors

This way, you won't have to manually sift through wordlists others made and can just play without the blacklisted words. Additionally, this will also cover any potential words already present in the pre-defined lists. As I don't speak all the langauges and everyone might have a different opinion on which words are actually bad words.