Add neovim config

Ngl, I didn't realize I accidently pushed a version of the nvim folder
that still had the LazyGit git repo, so it was pushed as a submodule. I
was getting annoyed at the inconsistency between my devices and was
trying to figure out the issue, finally looked at the Git repo on Gitea
and realized that lol. So I went ahead and cleaned config, and now we
should be good. Nvim config is in the best state it has even been in.

nvim/.config/nvim/lua/plugins/lualine_theme.lua

@@ -0,0 +1,12 @@
+return {
+  -- This is the Lualine plugin. LazyVim usually enables it with `LazyVim.extras.ui.lualine`.
+  -- We're just providing `opts` here to override the theme.
+  {
+    "nvim-lualine/lualine.nvim",
+    opts = {
+      options = {
+        theme = "catppuccin", -- Set Lualine to use the catppuccin theme
+      },
+    },
+  },
+}