Add SVG image support to Texture for Drawables

[eonarheim]

Context

Currently, only bmp, jpg, and png image types are support in excalibur texture system. Raster graphics have a few downsides, notably their potentially size and problems scaling up.

SVG would allow for infinite scaling, and super small image sources to download

Proposal

Implement SVG as a supported Texture type,

let svgTex = new ex.Texture('./path/to/my/cool.svg');

Some materials to reference:

• https://stackoverflow.com/questions/3768565/drawing-an-svg-file-on-a-html5-canvas
• https://developer.mozilla.org/en-US/docs/Web/API/Path2D

[kevin192291]

I was just working in the Texture class. Mind if I pick this one up?

[eonarheim]

@kevin192291 Go for it!

[eonarheim]

SVG's are now supported accidentally in ex.ImageSource in the webgl renderer!

[kevin192291]

Is this still an issue? Want me to have a look at it?