Add Heart shape tool

[ashishmohapatra240]

Partially Closes #3419

https://github.com/user-attachments/assets/30e6f1fc-fbb8-45a8-8bfd-bb539871926e

• Add new_heart() method
• Add Heart node to vector generator nodes
• Add Heart to ShapeType enum and UI dropdown

[TrueDoctor]

I feel like the shape looks a bit off, when I think of a heart, I usually picture something like this:

[ashishmohapatra240]

Yeah, let me try to match the shape. I tried playing around with the values in core.rs and came up with this.

[Keavon]

I heart can't be represented with just two anchor points, it needs an additional pair. We also would like gizmos to control the shape of the heart in several ways like the depth and separation of the top V, the angle of the bottom V, and maybe the "plumpness" of the bulb parts.

[ashishmohapatra240]

I heart can't be represented with just two anchor points, it needs an additional pair. We also would like gizmos to control the shape of the heart in several ways like the depth and separation of the top V, the angle of the bottom V, and maybe the "plumpness" of the bulb parts.

On it, sir. 🫡