Added

- Add `g:gruvbox_material_cursor_line_contrast`
- Optimize [arakashic/chromatica.nvim](https://github.com/arakashic/chromatica.nvim)
- Optimize [numirias/semshi](https://github.com/numirias/semshi)
- Optimize [jackguo380/vim-lsp-cxx-highlight](https://github.com/jackguo380/vim-lsp-cxx-highlight)