Pulled out Cirq proto dependency. #590
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balopat
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Jun 8, 2021
jaeyoo
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Mar 30, 2023
Fix URL to a moved cirq file
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People with L + 3 foresight (@dabacon, @balopat ) independently predicted we might run into issues with our dependency on the "pre-compiled never re-built" cirq
***_pb2.pyfiles as well as their associated serialization logic. Despite these predictions being over a year old, the first warning signs have come through here (quantumlib/Cirq#4161).This PR pulls out the original serialization logic we built on from Cirq v0.9.0 release tag (the one with the most minimal serialization that still supports everything we need) and moves it entirely into the TFQ repo. From here we can gradually trim off the things we don't need and cut down on proto size to get the code running even faster while removing our explicit proto version requirements as well as dependency on the pre-generated proto files. This will also make life for Cirq easier since they won't have to worry (as much) about proto issues and serialization logic downstream for us.