feat(primitives): SVG parser/renderer (#893)

* Dependency: add markup.ml

* initial implementation

* example

* split into separate modules

* add basic SVGString component

* split out RenderContext

* pass dimensions to canvas render function

* largeArc -> size

* fix viewport transform

* add CanvasContext.drawRoundedRect

* viewBox

* implement arc path commands

* add polygon

* add named color lookup by string

* parse color names

* improve error reporting

* add more examples

* implement quad path command

* make color lookup case insensitive

* fix fill and stroke defaults

* fix stroke width default

* handle auto for rect's rx, ry

* fix v path command

* add fixed examples compensating for missing features

* implement polyline

* add source to examples where appropriate

* add a few real world examples

* convert path parser to state machine to fix several edge cases

* enable anti-aliasing on paint

* skia: add Path.getLastPoint

* implement V and H path commands

* implement S path command

* implement s path command (hopefully)

* format,

* refactor path command parser to support implicit chaining

* fix flash example source

* remove redundant tweaked close path example

* add second quad bezier example

* implement T following Q (but not q, T, t)

* remove empty Style module

Co-authored-by: Et7f3 <cadeaudeelie@gmail.com>

* refactor SVGExample to remove smelly code

* simplify pattern match

Co-authored-by: Et7f3 <cadeaudeelie@gmail.com>

* format,

Co-authored-by: Github Runner <runner@runner.github.com>
Co-authored-by: Et7f3 <cadeaudeelie@gmail.com>