add actions.change_dir.restrict_above_cwd (#1171)

doc/nvim-tree-lua.txt

@@ -163,6 +163,7 @@ function.
         change_dir = {
           enable = true,
           global = false,
+          restrict_above_cwd = false,
         },
         open_file = {
           quit_on_open = false,
@@ -486,6 +487,11 @@ Here is a list of the options available in the setup call:
       type: `boolean`
       default: `false`
 
+  - |actions.change_dir.restrict_above_cwd|: restrict changing to a directory
+    above the global current working directory.
+      type: `boolean`
+      default: `false`
+
   - |actions.open_file.quit_on_open|: closes the explorer when opening a file.
     It will also disable preventing a buffer overriding the tree.
       type: `boolean`