cherry-pick from tal project
fix editor drag issue
fix color issue
when playersettings.colorspace is linear, the editor window color is wrong (still srgb). we should add logics to shader to fix this issue
we need to add a host to redux widget to support multi-panel interaction. but currently the code is buggy since it only support editorwindow and will break on standalone players. we should fix this in a later PR
Zxw/dev k12