Add ruff for python

[jiz4oh]

Ruff had released a stabilized built-in lsp server in the 0.5.3 and ruff-lsp is deprecating

The PR adds the ruff support according to the official suggestion for vim-lsp

[mattn]

Thank you

[vanous]

hi @jiz4oh , thank you for the integration of ruff and thank you @mattn for all the work on the vim-lsp-settings, much appreciated!

Is it expected to have to manually configure ruff in .vimrc to be started when editing .py files?

let g:lsp_settings_filetype_python = ["ruff"]