`surface_explorer` refactor stage 2

[haoxiang-xu]

Pendings:

• [ ] rename process takes too long when contains too much subfiles
• [ ] rename rename duplicate should have shake animation
• [ ] explorer should update when dir updated outside the program
• [ ] header indicator implementation
• [ ] context menu right click will trigger another explorer item to be rename
• [ ] drag and drop explorer inside drag and drop function should have move file functions
• [ ] control use arrow keys to select between files and folders
• [ ] search
• [ ] style explorer is only responsing to horizonal mode for now