Added a 'Collapse/Expand Graph' button

[VladCuciureanu]

Solves #188

This PR implements a Expand/Collapse Graph button in the sidebar that does exactly what the name implies.

Screen.Recording.2022-10-05.at.15.58.55.mov

[AykutSarac]

Thank you for your contribution! The main task here is to collapse all parent nodes, not only the main. So one will expand nodes one by one once all are collapsed, currently it only collapses parent node. Is it possible to achieve that?

[VladCuciureanu]

Thank you for your contribution! The main task here is to collapse all parent nodes, not only the main. So one will expand nodes one by one once all are collapsed, currently it only collapses parent node. Is it possible to achieve that?

I misinterpreted that. Updated implementation. Hope this is ok.

Screen.Recording.2022-10-05.at.20.27.27.mov

[AykutSarac]

Thank you! It works but I think there's a bug, if you expand one by one you can see parents appearing after their parent expanded. I tested it on this https://www.reddit.com/r/all.json

[VladCuciureanu]

@AykutSarac The bug is present on production and is unrelated to this ticket.
I suggest opening a new issue for this bug.

Screen.Recording.2022-10-05.at.22.02.44.mov

You can reproduce it by using this JSON:

{ "test": "test", "members": [ { "test": "test", "members": [ { "test": "test", "members": [ { "test": "test", "members": [] } ] } ] } ] }