Add more status output

soong_ui now parses the output from kati into "actions" to feed into the
unified status system. It also looks for errors and marks the enclosing
section as failed.

This adds a few more states so that error messages can be more
appropriately attributed - so that all errors at the end of the buid
aren't attributed to the last makefile read.

Test: m
Test: add some errors
Change-Id: I3abdb004c82e2b99822906910cd66123c11a5099