There are several class/struct members that are missing when a program
is serialized/deserialized. This leads to errors when attempting to link
programs that have been deserialized. For example, when drawing with a
PPO that contains programs which were created with glProgramBinary().

This CL adds saving/loading the missing members.

Bug: b/182409935
Change-Id: I637c6cd8c174acd6da8d51433893323a32e5d7c0
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2770683
Commit-Queue: Tim Van Patten <timvp@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>