Pass configuration options to SVGR

[jsakas]

Hello, it would be awesome if we could configure SVGR using CRACO.

CRA seems to have SVGR configured by default, but there are no options to customize the config it like you can with babel and others.

There are a lot of SVGR options like Replace attribute value which are extremely useful for managing icon colors.

[dilanx]

I'll look into it!