feat(vscode): make use of vscode builtin terminal (#4392)

## Description

<!-- Describe the big picture of your changes to communicate to the
maintainers
  why we should accept this pull request. -->
make use of vscode builtin terminal

**I don't know how to properly handle cwd so it's implemented as a
simple toggle**

## Related Issue(s)

<!--
  If this PR fixes any issues, please link to the issue here.
  - Fixes #<issue_number>
-->
#4280

## Checklist

- [X] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.

lua/lazyvim/plugins/extras/vscode.lua

@@ -33,11 +33,15 @@ vim.api.nvim_create_autocmd("User", {
   pattern = "LazyVimKeymapsDefaults",
   callback = function()
     vim.keymap.set("n", "<leader><space>", "<cmd>Find<cr>")
-    vim.keymap.set("n", "<leader>/", [[<cmd>call VSCodeNotify('workbench.action.findInFiles')<cr>]])
-    vim.keymap.set("n", "<leader>ss", [[<cmd>call VSCodeNotify('workbench.action.gotoSymbol')<cr>]])
+    vim.keymap.set("n", "<leader>/", [[<cmd>lua require('vscode').action('workbench.action.findInFiles')<cr>]])
+    vim.keymap.set("n", "<leader>ss", [[<cmd>lua require('vscode').action('workbench.action.gotoSymbol')<cr>]])
   end,
 })
 
+function LazyVim.terminal()
+  require("vscode").action("workbench.action.terminal.toggleTerminal")
+end
+
 return {
   {
     "LazyVim/LazyVim",