feat/fix: add rename cmd, fix rename error

- add <C-r> binding to omit the filename on rename (option is
  full_rename).
- call `silent! write!` on rename to avoid the `overwrite existing file`
  error when saving the buffer.

lua/nvim-tree.lua

@@ -65,7 +65,8 @@ end
 local keypress_funcs = {
   create = fs.create,
   remove = fs.remove,
-  rename = fs.rename,
+  rename = fs.rename(false),
+  full_rename = fs.rename(true),
   copy = fs.copy,
   cut = fs.cut,
   paste = fs.paste,