Edit asset data in Switch homebrew .nro files according to the Assets layout described on switchbrew.
Using this program it should be possible to add/change icons and metadata for any hbmenu homebrew apps. It can be downloaded from the release page.
To run the GUI, either run the precompiled binary from the release page, or run maker.py without any additional arguments.
python3 maker.py [--nro /path/to/file.nro] [--title \"Your App Title\"] [--icon /path/to/icon.(png|jpg)] [--author \"Your Author\"] [--version x.x.x]")
When running, it will output the before and after NRO information. Any arguments omitted will retain their value from before running the script.