Set up canvas

[RelativeForce]

Details:

Hours Spent: 13

Background

The canvas is how the user will view the plot. This canvas needs to be able to display all the features that are found in CanvasPlotter.hs

Overview

The canvas should be embedded in the halogen view. There should be a button added to the view that can be made to call any of the features like draw polygon. This is simply a proof of concept and hence the appearance of these features can be refactored later.

Acceptance Criteria

• There is a UI button that will draw a simple polygon on the canvas

Closing Notes

Overview of changes can be found in #11

It should be noted that there is currently no support for stopping plot computation in the middle of its execution as this requires a unique way to handle doing large computations.