Sketch Mode V1 Improvements

[pierremtb]

• Undo and Redo when the code pane is closed
• Small sketch mode adjustments: scaling the model on 1st constraint and giving more emphasis to moving lines, not their creation

---

Milestone: https://github.com/KittyCAD/modeling-app/milestone/10
Milestone contributors: @andrewvarga @Irev-Dev

[pierremtb]

Edited "Someone's (kevin) gonna hammer on getting camera fixed" out, since it's part of #7437