Create a plotting library

[dvc94ch]

The plotting solutions for rust are fairly suboptimal, if we want rust to be used more in scientific computing and ai, an advanced plotting library is required (the linear algebra libraries are fairly decent already). I think this would also be a great way for flutter-rs to gain more adoption.

Looks like since I last investigated the issue https://github.com/38/plotters popped up and with https://github.com/nical/lyon we probably don't even need flutter-rs except maybe for adding some buttons to zoom/export

[csnewman]

I have moved this issue to the examples repo.