react-icons - extend createIcon for multi-path & add hamburger icon

[kmcfaul]

createIcon should extend svgPath to allow an array which will create multiple path elements.

We should add the hamburger icon to our custom icons as well (need to put this data into JSON): https://github.com/patternfly/patternfly/blob/519a8ba0392be9b4a11985176c6ca70d2075a069/src/patternfly/components/Button/hamburger-icon.hbs

[thatblindgeye]

If this gets in after #11861 then as part of this issue the hamburgerIcon.tsx file in utils should be removed and its instances replaced.