Feature/view3d

[PingHsunTsai]

Propose change

• change: refactor Render() to View3D

├── view3d() - contain shader() and camera() the components that user can interact
│   ├── InteractiveOpenGLWidget() - contain controller() and selector(), where user can design there key action...(less use)    
│       ├── BaseOpenGLWidget() - contain base QOpenGLWidget       

The goal is to sort the relationship between shader(), camera(), controller() and selector(), at the same time make them more independent from each other.

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code.

• I added a line to the CHANGELOG.md file in the Unreleased section under the most fitting heading (e.g. Added, Changed, Removed).
• I ran all tests on my computer and it's all green (i.e. invoke test).
• I ran lint on my computer and there are no errors (i.e. invoke lint).

[Licini]

Maybe convert to draft if not finished yet?

[Licini]

why is this changed?

[Licini]

just delete it?

[tomvanmele]

shall we maybe close this since it is quite outdated by now?