Add existing languagetool for rst files. Add new rstcheck.
Remove old commented out blocks. Remove unnecessary function and call, just set the option.
I already set it up as service for firefox extension. This now also integrates into neovim.
I managed my setup manually. This commit ports the existing setup to home-manager. The program module is used to install neovim together with plugins. Custom plugins are now maintained at Gitea / GitHub and loaded via nix as well.
Daniel Siepmann