make confusables count for word filter

[spentcud]

https://util.unicode.org/UnicodeJsps/confusables.jsp
im honestly not sure why we dont have this yet

[BalaM314]

We have it, but with a much smaller substitutions list. I was looking for something like this list for a while. We need to:

• Process this list (not trivial, the format is awful)
• Remove anything over U+FFFF as mindustry doesn't display those
• Remove the many hundreds of characters that mindustry doesn't display (for filter performance)
• Manually decide duplicates (some characters can confuse with two different letters but for performance reasons we don't handle this case and just pick one of the letters)