build_wrapper: Add iOS build handler

Add support to build iOS using the build_wrapper.py script

Change-Id: I5ea486aa92b05c36cda44556311b4e33ec4c32b8
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
Add 5.2.0 iOS installer configurations

Change-Id: I46905a9bca4f54b202ebce127fdb7b70121399fd
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>