To build XCFramework, changed build_ios_libs.py to support
target pairs (environment, arch).
Also, changed default architecture to include the Arm64 iOS Simulator
and not the x86 iOS Simulator.
Mac Catalyst (target_environment = "catalyst") builds can also
be achieved in the same way, but at the moment, Mac Catalyst builds fail,
so I skipped them from the active arch.
Bug: webrtc:12372, webrtc:11516
Change-Id: I3f07ded81c7d0bdecc69a903b32e06c4ab63cee2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/202160
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34420}
c41093b0be