feat: copy react code

[TheMikeyRoss]

I'm absolutely in love with what you made here! Thank you very much.

Although there's a feature to copy the url and use it to get my customized shadergradient, I think it'd be great if we can copy the React props to easily use.

I currently have the code like this:

    <ShaderGradient
        animate="on"
        brightness={1}
        cAzimuthAngle={180}
        cDistance={2.8}
        cPolarAngle={80}
        cameraZoom={9.1}
        color1={colorSets[0]}
        color2={colorSets[1]}
        color3={colorSets[2]}
        envPreset="city"
        frameRate={10}
        grain="on"
        lightType="3d"
        positionX={0}
        positionY={0}
        positionZ={0}
        range="disabled"
        rangeEnd={40}
        rangeStart={0}
        reflection={0.1}
        rotationX={50}
        rotationY={0}
        rotationZ={-60}
        shader="defaults"
        type="waterPlane"
        uAmplitude={0}
        uDensity={1.5}
        uFrequency={0}
        uSpeed={0.5}
        uStrength={1.7}
        uTime={8}
        wireframe={false}
        zoomOut={false}
      />

And I'm having to adjust things to make it match the one I customized on https://www.shadergradient.co/customize

Would be wonderful if there's a copy button to copy the code (or something to indicate which option has which prop name, so that I can easily match them with the my code)