Initial public source release

Split reusable rendering and format support into vectorail-core and vectorail-gc.

apps/desktop/shaders/model.vert

@@ -0,0 +1,10 @@
+#version 450 core
+layout (location = 0) in vec3 aPos;
+
+uniform mat4 uProjection;
+uniform mat4 uView;
+uniform mat4 uModel;
+
+void main() {
+    gl_Position = uProjection * uView * uModel * vec4(aPos, 1.0);
+}