Changed how the extensions were checked.
Change to not a valid extension error message
Refactored launcher functionality into own class, added an Interface for the callback handler and an Exception for if it's used incorrectly. Original functionality still works but now it's separate from the Form.
Updated some of the syntax. Added game library

Game library is made up of a Game and a GameList
working on a directory to parse for games

NOT FINISHED
Added JSON, working with ListBox
Adding a selection, change to actual JSON
Moving things around for UI change. Need to work on getting selected list to display
Game name displays in TextBlock, need to get the list to populate. Default text is red, testing
Changed design, made to fit a larger screen. Selection now works and updates information accordingly
Removed buttons. Joystick support for game cabinet along with first button for each player
Testing for MAXIMIZED window at start of process. Cleanup checking for handler