[update] change assets submodule into a folder

[update] change the ci update wheel to v4

[update] update version to 0.4.6

[update] update python version

[fix] fix type annotation issue

[update] update to version 0.4.3

[add] add set qpos functionality

[update] update v0.4.1 for gripper retargeting

[update] major update to clean up retargeting config structure and re…

…move unnecessary entries

[update] update version