fix: moving the git signing settings to the local config, updating

neovim to use the diagnostic.jump functions, and enabling the
r_language_server LSP

nvim/lua/settings.lua

@@ -11,7 +11,6 @@ vim.opt.fileformat = 'unix'                                      -- Explicitly s
 vim.opt.fillchars = 'fold: '                                     -- Sets the character that fills in a fold line (removes the dots)
 vim.opt.foldcolumn = '0'                                         -- Disables the foldcolumn
 vim.opt.foldexpr = 'v:lua.vim.treesitter.foldexpr()'             -- Uses Treesitter to determine where code folding should occur
-vim.opt.foldlevel = 10                                           -- Sets the initial level at which folds will be closed
 vim.opt.foldlevelstart = 4                                       -- Sets the initial fold level
 vim.opt.foldmethod = 'expr'                                      -- Attempt to use the syntax of a file to set folds.
 vim.opt.foldnestmax = 4                                          -- Maximum level of fold nesting