* make sure buffer is null terminated in `Steam_UGC::GetQueryUGCPreviewURL()`
* implement 2 new useless ugc stuff + use an already made function to check for handle validity
* new function in local storage to get list of folders at root level, given some path
* use last week epoch as the default time for mods dates (created, added, etc...)
* UGC: some params checks according to SDK docs for CreateQueryXXX() functions
* fixed some mistakes
* common mods subscription state between ugc and remote storage
* ugc: implement SetUserItemVote(), GetUserItemVote(), AddItemToFavorites(), RemoveItemFromFavorites(), favorite mods list is now save in `favorites.txt` in the user data folder
* ugc: make sure returned mod folder from GetItemInstallInfo() is null terminated & validate arg
* edits by Kola124 + other changes in the settings parser
* random ugc mod handle at object creation
* file size using std::filesystem + fix warnings + some print + arg validation
