Move py-markupsafe to src folder am: 2712506a26 am: 400f1b1623 am: 4aa7cd23c6 am: d8a6d0f7e4 am: 06f32b0cb2

Original change: https://android-review.googlesource.com/c/platform/external/python/markupsafe/+/2218824

Change-Id: I6b9364634b6a978cbb04a2ecbccc350575e0cbc7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>