Merge "Gen a header library when genrules export includes" into main am:...

Merge "Gen a header library when genrules export includes" into main am: dc3606a8 am: 7d00fc56 am: c5c983c9 am: 944ad57b

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2662519



Change-Id: I2acc957e800f5d56818eef1ca3d96d5a830d213b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>