Implements some QEC codes in QCOR lib

Mccaskey, Alexrequested to merge
github/fork/tnguyen-ornl/tnguyen/std-lib into master

Created by: tnguyen-ornl

Each code is structured as a 3-member tuple: an operation to encode a phycical qubit into a logical register, an operation to decode syndromes and fix correctable errors, and the stabilizers.

Added a util function to measure stabilizers with an ancillary qubit.

Added sample test drivers to validate those codes.

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