feat: apply new module format to terminal plugins

modules/terminal/toggleterm/config.nix

@@ -0,0 +1,37 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}:
+with lib;
+with builtins; let
+  cfg = config.vim.terminal.toggleterm;
+in {
+  config = mkIf cfg.enable {
+    vim.startPlugins = [
+      "toggleterm-nvim"
+    ];
+
+    vim.luaConfigRC.toggleterm = nvim.dag.entryAnywhere ''
+      require("toggleterm").setup({
+        open_mapping = [[<c-t>]],
+        direction = '${toString cfg.direction}',
+        -- TODO: this should probably be turned into a module that uses the lua function if and only if the user has not set it
+        size = function(term)
+          if term.direction == "horizontal" then
+            return 15
+          elseif term.direction == "vertical" then
+            return vim.o.columns * 0.4
+          end
+        end,
+        winbar = {
+          enabled = '${toString cfg.enable_winbar}',
+          name_formatter = function(term) --  term: Terminal
+            return term.name
+          end
+        },
+      })
+    '';
+  };
+}