plugin/theme: setup lualine plugin

plugins/theme/default.nix

@@ -1,7 +1,13 @@
-{ catppuccin-nvim, ... }:
+{ catppuccin-nvim, lualine-nvim, lualine-lsp-progress, ... }:
 
 {
-  luaConfig = builtins.readFile ./catppuccin-nvim.lua;
+  luaConfig = (builtins.readFile ./catppuccin-nvim.lua)
+    + (builtins.readFile ./lualine.lua);
 
-  plugins = [ catppuccin-nvim ];
+  plugins = [
+    catppuccin-nvim
+
+    lualine-nvim
+    lualine-lsp-progress
+  ];
 }

plugins/theme/lualine.lua

@@ -0,0 +1,16 @@
+-- See: https://github.com/nvim-lualine/lualine.nvim#default-configuration
+require("lualine").setup({
+	options = {
+		ignore_focus = { "NvimTree" },
+	},
+	sections = {
+		lualine_a = {
+			{ "filename", path = 1 },
+		},
+		lualine_b = { "branch", "diff", "diagnostics" },
+		lualine_c = { "lsp_progress" },
+		lualine_x = { "filesize", "filetype" },
+		lualine_y = { "progress" },
+		lualine_z = { "location", "mode" },
+	},
+})