Methodology: A flag was considered unused if it was exclusively mentioned in deffinitions and the "DiscordLike" flag list. If a flag was seen being used anywhere else in the code, it was left as-is.
* Add script to automatically add license to each file
* Add license preamble to each file.
* Fix existing preamble detection breaking due to line endings. Git :(
* Prevent license from being added to code with other licenses