Migrate apache-http stubs generation to Soong.

Bug: b/70351683
Test: m clean && m check-apache-http-legacy-api,
and compare the old and new stubs.jar using md5sum.

Change-Id: Ic682726ab9cf6b3565fdf0526496a944e736512f
Merged-In: Ic682726ab9cf6b3565fdf0526496a944e736512f
2 files changed