Fix: update getTexture API to be consistent with HTMLText

[GoodBoyDigital]

Description of change

This adjuste the API so that creating a text texture is a little easier for devs.

const textOptions = {
    text:'hello'
    style
};

// make a text.. easy!
const text = new Text(textOptions);

// make a text texture.. just as easy!
const textTexture = renderer.canvasText.gettexture(textOptions);

Pre-Merge Checklist

• Tests and/or benchmarks are included
• Documentation is changed or added
• Lint process passed (npm run lint)
• Tests passed (npm run test)

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