One click collapse directory function

[Log0519]

Describe your feature request

Under normal conditions,when we open a file,the directory will be expanded,this makes us unable to see the main structure clearly

when we use directory ,if we want to close it,whice can let us more clearly see the directory structure,So I want a button can use it to close all directory，then olny display primary directory

What problem does this feature solve? [optional]

we can open directory and close it more convenient, let us more clearly see the directory structure,to find what we need ,just like
IDEA ,there is a button to expand all,and a button to close all.