feat(#1389): add git.show_on_dirs (#1390)

doc/nvim-tree-lua.txt

@@ -276,6 +276,7 @@ Subsequent calls to setup will replace the previous configuration.
       git = {
         enable = true,
         ignore = true,
+        show_on_dirs = true,
         timeout = 400,
       },
       actions = {
@@ -464,8 +465,7 @@ Show LSP and COC diagnostics in the signcolumn
       Type: `boolean`, Default: `false`
 
     *nvim-tree.diagnostics.show_on_dirs*
-    If the node with diagnostic is not visible, then show diagnostic in the
-    parent directory.
+    Show diagnostic icons on parent directories.
       Type: `boolean`, Default: `false`
 
     *nvim-tree.diagnostics.icons*
@@ -491,6 +491,10 @@ Git integration with icons and colors.
     Toggle via the `toggle_git_ignored` action, default mapping `I`.
       Type: `boolean`, Default: `true`
 
+    *nvim-tree.git.show_on_dirs*
+    Show status icons of children when directory itself has no status icon.
+      Type: `boolean`, Default: `true`
+
     *nvim-tree.git.timeout*
     Kills the git process after some time if it takes too long.
       Type: `number`, Default: `400` (ms)