Sync notify tests

[nicfit]

• touch a music file: IN_OPEN, IN_ATTRIB, IN_CLOSE_WRITE
• touch a non-music file: IN_OPEN, IN_ATTRIB, IN_CLOSE_WRITE
• touch a music dir
• touch a non-music dir
• chmod/chown a music file
• chmod/chown a non-music file
• chmod/chown a music dir
• chmod/chown a non-music dir
• edit a file
• add a file
• rm a file
• add a music dir
• rm a music dir
• add a non-music dir
• rm a non-music dir
• rm cover art
• add cover art