This PR aligns StandardMaterial#constructor with other classes like Texture#constructor to accept an optional options object, allowing properties (e.g., diffuse, depthTest) to be set during instantiation without being forced to call additional methods like Material#update - reducing boilerplate code.

Example:

const entity = new pc.Entity("test");
entity.addComponent("render", {
    type: "box",
    material: new pc.StandardMaterial({diffuse: pc.Color.RED})
});

Basically, the aim is to keep the code short and readable and to reduce manual bookkeeping.

@mvaligursky I'm not entirely sure about the requirement for this.update() or if these property assignments should happen before e.g. this.reset()?

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