Add noise filter to jersey `<svg>` icons

[krazkidd]

I would like to add something like a Heather pattern to the jersey icons here so they don't appear so flat.

This can be done through a noise filter, like this:

<filter id='noiseFilter'>
    <feTurbulence 
      type='fractalNoise' 
      baseFrequency='0.65' 
      numOctaves='3' 
      stitchTiles='stitch'/>
</filter>

[krazkidd]

Found a great noise generator!

https://github.com/FiniteLooper/noise-maker