Adding BT2020 to ColorManagement in RenderEngine drawMesh

Adding support to transform between BT2020 and Display P3 and sRGB,
with the addition of DISPLAY_BT2020, BT2020 is a viable input/output
non-hdr dataspace and must be supported.

Bug: 115335239
Test: Existing RenderEngine tests should pass
Change-Id: Ic1cdc88b40afe87584c1dfd46b356784ca21d63e