Enable efficient contraction order simulation

[nabe98]

Before submitting, please check the following:

• Make sure you have tests for the new code and that test passes (run tox)
• If applicable, add a line to the [unreleased] part of CHANGELOG.md, following keep-a-changelog.
• Format added code by black and isort
  • See pyproject.toml for configurations

Then, please fill in below:

Context (if applicable):

Description of the change: Enabled TN contraction based state vector simulator, which is more efficient compared with pure state-vector simulation.

Related issue: #92

also see that checks (github actions) pass. If lint check keeps failing, try installing black==22.8.0 as behavior seems to vary across versions.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 97.59036% with 2 lines in your changes missing coverage. Please review.

Project coverage is 75.89%. Comparing base (364be19) to head (d124700). Report is 47 commits behind head on master.

Files with missing lines	Patch %	Lines
graphix/random_objects.py	96.77%	2 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #166      +/-   ##
==========================================
+ Coverage   75.52%   75.89%   +0.37%     
==========================================
  Files          34       34              
  Lines        5569     5638      +69     
==========================================
+ Hits         4206     4279      +73     
+ Misses       1363     1359       -4     

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[shinich1]

@nabe98 can you paste benchmarking result (plot) on this page?

[nabe98]

OK. I'll share that as soon as I return to my home (around 8/7).

[nabe98]

@shinich1 Here is the benchmarking result plot.

[nabe98]

The latest benchmarking plot with error bars (for 5 iterations).

[shinich1]

closing because of no activities for a year, we can re-open when interest emerge.