[nvim] Move neovim config to /nvim

config/nvim/lua/diagnostics.lua

@@ -1,15 +0,0 @@
--- Eryn Wells <eryn@erynwells.me>
-
-vim.diagnostic.config {
-    virtual_text = false,
-    signs = true,
-    update_in_insert = true,
-    underline = true,
-    severity_sort = false,
-    float = {
-        border = 'rounded',
-        source = 'always',
-        header = '',
-        prefix = '',
-    },
-}