In tree view: Toggle all directories collapsed

[multivac61]

Is your feature request related to a problem? Please describe.
It would be nice to have the ability to toggle all directories when in tree view. When making a lot of edits it is tedious to do this by hand. Flat layout is very nice, but this is a little different.

Describe the solution you'd like
Ability to toggle all directories collapsed

Describe alternatives you've considered
Flat layout

Additional context
I 🫶 lazygit

[Axlefublr]

yes! I need this sm

[Kemboiray]

I don't know about collapsing all directories, but you can collapse a single directory by pressing <enter>.

[Axlefublr]

it is tedious to do this by hand

[vdegenne]

I don't know anything about go language but I wish I could help with that, this is really needed.

[stefanhaller]

Implemented in #4131.