3D mouse input support

[brenocq]

Add support for 3D mouse input to interactively manipulate 3D plots (e.g., rotate, pan, and zoom). This would improve usability and provide an intuitive way to explore 3D data.

[dimateos]

This reminds me of horizontal scrolling when you hold SHIFT (e.g. in browsers).

Not sure what is usually the case:

• this 3D device issues horizontal scroll
• this 3D device emulate SHIFT+scroll
• regular mouse issues horizontal axis when the user is holding SHIFT
• the browsers interprets SHIFT+scroll on regular mouse as horizontal

for the third axis idk SHIFT+ALT or SHIFT+CTRL?

My point is that you can probably code this already for a regular mouser + modifier(s) key.
But maybe modifier keys are better suited for other tasks tho

[brenocq]

That's a very interesting idea! Maybe we could investigate how other 3d plot libraries use mod keys to get some ideas of mod keys for implot3d.

If we decide to implement #17 we would indeed need to implement some mod keys to move in 3D (like blender-style, solidworks-style, etc)