vim-lsc: init at fe6d3bd

`natebosch/vim-lsc` is a language server client plugin for vim/neovim. This commit
adds it to the `vim-plugin-names` file and the generated vim-plugins
file.

This is a reboot of #52407 that doesn't call the `update.py` script for
vim plugins, because doing so led to quick merge conflicts. Let me know
if there is a preferred way to do this.

pkgs/misc/vim-plugins/vim-plugin-names

@@ -191,6 +191,7 @@ mkasa/lushtags
 morhetz/gruvbox
 motus/pig.vim
 mpickering/hlint-refactor-vim
+natebosch/vim-lsc
 nathanaelkane/vim-indent-guides
 navicore/vissort.vim
 nbouscal/vim-stylish-haskell