Minor/ignore - Code formatting
Added context menu to DetailForm w/ Copy Selected, Copy All, and Select All options
Minor/ignore - Removed unused `using`
Added IWndProcObservable interface to DotNetUtils/Forms
Added DiscMenu class to BDHeroGUI project
Use DiscMenu class instead of interacting directly with DriveDetector in GUI FormMain
Removed "Test" menu strip item from "Open Disc" menu
Scan the selected drive when an "Open Disc" menu item is clicked in FormMain
Reset DiscMenu when it is opened rather than when it is closed to avoid unbinding the "click" event handler before it gets a chance to execute