Move the about editor files to editor folder

N/A

将编辑页面相关代码移到editor文件夹，并且重命名EditNote为EditNoteActivity
Signed-off-by: kevin <kevin.loveandlonely@gmail.com>
update
Signed-off-by: zhuyifan <zhuyifan@xiaomi.com>
Merge branch 'kevinunic-local_dev'