- Implemented glcdfont.c for custom font rendering.
- Created keymap.c with multiple layers including NORTO, QWERTY, NORTNAVIGATION, and SYMFKEYS.
- Added OLED display functionality to show layer states and modifier statuses.
- Included keymap.json for configuration.
This is needed to support VS Code with clangd for userspace keymaps (in
this case `compile_commands.json` and `.cache/clangd` are located in the
`qmk_userspace` working copy).
- folder name inside dev container is same as folder name on host
so if it differs from qmk_userspace then setup.sh cannot be found
and it sets incorrect user.overlay_dir
- docs https://containers.dev/implementors/json_reference/
