Remember collapsed containers, networks and volumes between sessions

[tomkr4l]

In docker sidebar collapsing containers, networks and volumes is not remembered between vscode window reloads. When you have only few containers, It's quite ok, but when you work with a lot contaniers, you want to collapse the ones you work with less.

Steps to reproduce:

1. Go to Docker containers and collapse some of the containers.
2. Reload window or close and reopen VsCode
3. Collapsed containers are no longer collapsed.

Images:

• docker1 collapsed containers before window reload
• docker2 containers view after window reload

[bwateratmsft]

Kinda related to #4375