feat: add menu for snacks picker#512

hoangnx2204 wants to merge 1 commit intonvim-flutter:mainnvim-flutter/flutter-tools.nvim:mainfrom

hoangnx2204:feature/menu-for-snack-pickerhoangnx2204/flutter-tools.nvim:feature/menu-for-snack-pickerCopy head branch name to clipboard