feat(skia): bind to Skia's SVGDOM (#1058)

* Dependencies: bump esy-skia to c2d9264

* reason-skia: extend the existing C-bindings to include SVGDOM

* Skia: bind to the new C-bindings in OCaml

* SVG: create SVG rendering example in SkiaCli

* Discover: see if moving CLI flags around fixes symbol errors

* Build: try ranlib fix

* Build: see if splitting the libraries works

* Dependencies: bump skia

* Skia: move C API extensions

* Skia: add grouping for Skia linking flags on Linux

* Skia: don't garbage collect streams (they're already consumed & deleted)

* Skia: add -fPIC on Linux

* Skia: add -fPIC in more places

* Skia: bump version (35eedf1, BUILD.gn modifications)

* Skia: bump version (4ea30a804b, copy files on Windows)

* Skia: bump version (33c3763, include SVG)

* Skia: make compatible with newest esy-skia

* Skia: more fixes

* Skia: bump version (b13a2af59fb1ed5e8e52eb549325a57d5cf823c1, SVGNode)

* Skia: bump version (9846aa2, new master)

* Skia: make SVG optional & wrap stream with SVG

* [BROKEN] Skia: hook up finaliser on memory streams

* Skia: bump version (526fdf5, unique_ptr fix)

* Skia: bump version (2539bbe, header file update)

* Skia: add finalisers for file streams and SVGs

* SkiaCli: add file example w/ OCaml logo

* Formatting

* SkiaCli: use Revery icon rather than OCaml logo

* Skia: make API clearer, add finaliser

Author: zbaylin

.gitignore

@@ -73,6 +73,7 @@ _esy/
 .DS_Store
 
 skia-c-example.png
+skia-svg-example.png
 skia-font-manager-output.png
 Arial.ttf