Add taskcluster.yml for opening PR agaist android icon components

[aminalhazwani]

This is the repo: https://github.com/mozilla-mobile/android-components

This is the collection of icons https://github.com/mozilla-mobile/android-components/tree/master/components/ui/icons/src/main/res/drawable

The name on our repository should match the name on the mozac repository. The name should be unique, something like photon_ic_back.xml

[pocmo]

This looks like a nice tool to convert SVGs to Android's Vector Drawable XML format:
https://github.com/alexjlockwood/svg2vd

And there's even a tool that can optimize the Drawable XML files:
https://github.com/alexjlockwood/avocado

[aminalhazwani]

@pocmo we now have Vector Drawables https://github.com/FirefoxUX/photon-icons/tree/master/icons/android 🙌 but the optimization tool looks interesting cc @bwinton