[Enhancement] Categories

[Ki-er]

See: https://os-link-biodotpe.vercel.app/ as an example, I think this was made using littlelink, I feel like itd be good idea for littlelink-server.

[LiaGen]

Just will put a workaround how it can be done in current config with no development just add CUSTOM_BUTTON

• CUSTOM_BUTTON_COLOR=#1C00ff00 (no color will apply)
• CUSTOM_BUTTON_ICON=#
• CUSTOM_BUTTON_URL=#
• button order as you want it that will give you what you needed

[timothystewart6]

Thanks for the creative workaround!