Add Blender control scheme

[krispya]

Artists coming from Blender expect controls that feel similarly. Here are the important ones:

• [ ] Shift + Press Down Middle Mouse: Move Viewport Location
• [ ] Press Down Middle Mouse: Rotate Viewport
• [ ] CTRL + Press Down Middle Mouse Button + Drag Mouse Forward / Backward: Zoom in and out
• [ ] Left Mouse Drag: Square Lasso for selection of objects. Depends on: https://github.com/try-triplex/triplex/issues/22
• [x] Ctrl + D: Duplicate selected scene object. Depends on: https://github.com/try-triplex/triplex/issues/117

Some of this depends on other features being added. I'll link those too. This may also need some kind of preferences so that user can swap control schemes. Maybe the one now is known as Default and there can be one called Blender specifically for people who want that familiarity.

[itsdouges]

Is duplicate object CTRL + D or SHIFT + D? I see it as SHIFT + D on macOS. Currently I've implemented it as CommandOrControl + D. (So, macOS = cmd, Windows = Control).