Create a folder for staged and changes file

**Is your feature request related to a problem? Please describe.**
Currenlty it is kind of hard to know if the file is staged or not.
I think you can check this by color of file.
but I think it would be easer to add the folder for staged file like vscode does.


**Describe the solution you'd like**
Create a folder for staged file
**Describe alternatives you've considered**
.
**Additional context**
.