Python code for simulated annealing via Pennylane [unitaryhack]

[maxwell04-wq]

Context: Simulated annealing algorithm

Description of the Change: A new function for running the simulated annealing algorithm for finding global optima of optimization problems

Benefits: There is no dedicated package for simulated annealing at PennyLane. This contribution will make the algorithm available at the library.

Possible Drawbacks:

Related GitHub Issues:

[codecov[bot]]

Codecov Report

Merging #2714 (529b6c7) into master (5ce9065) will not change coverage. The diff coverage is n/a.

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##           master    #2714   +/-   ##
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  Coverage   99.61%   99.61%           
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  Files         253      253           
  Lines       20748    20748           
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  Hits        20668    20668           
  Misses         80       80           

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[trbromley]

Thanks @maxwell04-wq for the great demo on this: https://github.com/maxwell04-wq/simulated-annealing-pennylane/blob/main/Simulated_Annealing_Tutorial_Pennylane.ipynb

I will close this PR.