Add ForeignObject support for react native

[jalooc]

SVGR currently drops <foreignObject> tags, even though they're supported by react-native-svg.

Summary

This PR adds foreignObject to the map of recognised tags (elementToComponent).

[vercel]

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[codecov]

Codecov Report

Merging #430 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #430   +/-   ##
=======================================
  Coverage   86.53%   86.53%           
=======================================
  Files          31       31           
  Lines         557      557           
  Branches      153      153           
=======================================
  Hits          482      482           
  Misses         60       60           
  Partials       15       15           

Impacted Files	Coverage Δ
...bel-plugin-transform-react-native-svg/src/index.js	97.72% <ø> (ø)

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[gregberge]

Thanks!