[Feature Request] Expand/Collapse All Parameter Groups

[helloar14]

Validations

• I have checked for similar feature requests and could not find any.
• I have made sure this is not an already-existing feature.

Description

(I know about the plan for big UI overhaul so just set aside this as a note for the future) Currently there's no helper button to expand or collapse all parameter groups.

Suggested solution

Add buttons to expand/collapse all parameter groups. Maybe beside the 'Add Parameter' button.

Alternative solution

No response

Additional Context

No response

[r888800009]

expand and collapse are based on this code

inochi-creator/source/creator/panels/nodes.d

Line 216 in da1b49a

bool open = igTreeNodeEx(cast(void*)n.uuid, flags, "");

also see, I'm not sure if the state is maintained by imgui and if there is an API provided

https://github.com/ocornut/imgui/blob/8807b01b28883dfbf7b971a4aa6c1199e4dea827/imgui.h#L651-L669

We also need to consider issue

• [Feature Request] Ability to search nodes in the node list #400

I found a GetStateStorage() and GetBool(), SetBool() and I'm trying to change the state of the collapse
also see this issue

• How to recursively fold all TreeNodes? ocornut/imgui#1131