Viper - Launcher+Updater for TF|2 Northstar

Age	Commit message (Collapse)	Author
2021-12-30	buttons now disable when updating, and app logs	0neGal
	The buttons in the GUI disable whilst you're updating Northstar and potentionally doing other things in the future, I also added a way to log things in the app, albeit it just prints it in the "Welcome to Viper!" part of the app, which is just fine. I also added all the needed language strings for the GUI logs and removed "gui.missinggamepath" as we use it for both the CLI and GUI even tho "general.missinggamepath" exists, and so we now use the general one for both, as the messages are the same.
2021-12-29	[feat] adding French localisation file	Alystrasz