UICatalog scenario to open another scenario process and return some result#4418

BDisp wants to merge 6 commits intogui-cs:v2_developgui-cs/Terminal.Gui:v2_developfrom

BDisp:v2_open-child-process-with-return-resultBDisp/Terminal.Gui:v2_open-child-process-with-return-resultCopy head branch name to clipboard