Merge "Create python_runtime_pair and Python toolchain rules" am: 72db6c7a04

Original change: https://android-review.googlesource.com/c/platform/prebuilts/build-tools/+/2035769

Change-Id: I98abf1b3c2cd29acbd33720229c937491f0cd6d5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>