Support pan, rotate and zoom camera operations

[skywhale]

Rotate and zoom is achieved by moving the camera instead of modifying the target object.

For #61

[bschwind]

Hey thanks! I took a look at this and will get back to it more later. It mostly works but there are a few edge cases and issues to work out before merging. I'll go into more detail on a review later.

[tuna-f1sh]

Nice to be able to move the model at last. I also noticed probably the same oddities:

• Perhaps just me (I often invert y axis on games) but it feels reversed to what I would expect.
• The object can clip (for want of a better word) zooming out - not found the culprit yet.

[skywhale]

@bschwind @tuna-f1sh I switched to use quartenion rotation and reversed the rotation orientation. PTAL 🙇

I could not figure out what is causing the clipping issue, though. The far and near parameters that I'm passing to projection do not seem related.

[mkovaxx]

@skywhale Hey Ryo, this is Máté! Just sharing some thoughts. Hope they'll help!

[mkovaxx]

I'm going to commandeer this PR! ;)

[mkovaxx]

@bschwind I think this works reasonably well for now. Please try it out! ;)

[mkovaxx]

Rebased onto latest main.

[bschwind]

This is awesome, thanks so much for finishing this!

It functions almost exactly as I had imagined it would, very usable on a trackpad.

[bschwind]

Nice! I'll go ahead and make the change I suggested and merge it :)

[bschwind]

I played around a bit with this, I think 1.0 is a bit more comfortable for most of the models I tried.

[skywhale]

Thank you @mkovaxx @bschwind for iterating on this and merging. I'm sorry for not being able to get back to it, but I'm so glad that it landed :)