feat: sync highlight mapping and add LSP

[m0n99]

• align Neovim highlight colors with the Bearded VSCode theme across palettes
• add LSP semantic token mappings

[Ferouk]

Thanks a lot @m0n99 for the contribution! 🙌
There’s a small formatting issue causing the CI to fail — running stylua . in the project should fix it. Thanks again! 🚀

[m0n99]

@Ferouk fixed