Controls
Compass, pitch, style and zoom controls have their own directive, each of them accepting a position binding.
<azure-map>
<map-zoom-control position='top-left'></map-zoom-control>
<map-pitch-control position="top-right"></map-pitch-control>
<map-compass-control position="bottom-left"></map-compass-control>
<map-style-control position="bottom-right"></map-style-control>
</azure-map>
