Fixes issue #3 and adds some C# experimental stuff

Texture editor is now a full command-line application

Merged screenshots into one, for easier Markdown management

Merged screenshots into one, for easier Markdown management

Updated version to 1.4-beta

Fixed Sentry handling, made arctool execution silent

Added syntax highlighting and vscode workspace files

Added mugshot previews, mugshot npz generation program (x8_utils), an…

…d mugshot pictures