Add Circuit Generation Notebook for Discrete Time Crystal Experiments

[augustehirth]

PR 3 of 6 on implementing and graphing Figures 2d through 3d of Observation of Time-Crystalline Eigenstate Order on a Quantum Processor (arxiv:2107.13571)

This PR adds the notebook which explains the DTC circuit's construction. It depends on PR #250 for the implementation of the circuit constructing function

[review-notebook-app[bot]]

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[augustehirth]

@dstrain115 / @mpharrigan PTAL for method.

@XiaoMiQC PTAL for correctness.