[Feature Request] Menu Background Compatibility with Modern Filetypes

[shimstock22]

The bm filetype is outdated. I'm not sure the old bmp to bm conversion software can be found anymore. For future modding, the ability to use hi-res jpeg, png, etc would be cool. We talked about this briefly once. Just putting it on your radar. Massive praise for your work!!

[Vortikai]

Could be fun for extending current menus to fit widescreen ratios as well, like in this quick mock-up