Added type for DLCs to gameFile (GFTYPE_DLC)
Added gameDetails::getGameFileVector function
Simplified Downloader::checkStatus code by removing duplicate code
Downloader::checkStatus now also tries to get remote file hash for patches and language packs
gameFile now contains gamename and file type info
Game details cache format has been changed to match gameFile changes
Cache also has a new "gamedetails-cache-version" field that can be used to detect cache format changes
Helps with large libraries when running the downloader multiple times.
Getting game details for many games takes a long time. Caching the game details makes the process much faster for subsequent runs.
Game details are cached to "$XDG_CACHE_HOME/lgogdownloader/gamedetails.json"
--update-cache creates and updates the cache.
--use-cache enables loading game details from cache.
--cache-valid specifies how long cached game details are considered valid
