LRE Executors

[purva-thakre]

Description

Fixes #2370

List of todos:

• Docstrings
• Additional unit tests

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License

• I license this contribution under the terms of the GNU GPL, version 3 and grant Unitary Fund the right to provide additional permissions as described in section 7 of the GNU GPL, version 3.

Before opening the PR, please ensure you have completed the following where appropriate.

• I added unit tests for new code.
• I used type hints in function signatures.
• I used Google-style docstrings for functions.
• I updated the documentation where relevant.
• Added myself / the copyright holder to the AUTHORS file

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.72%. Comparing base (1a3705c) to head (9146116).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2499   +/-   ##
=======================================
  Coverage   98.71%   98.72%           
=======================================
  Files          89       90    +1     
  Lines        4131     4157   +26     
=======================================
+ Hits         4078     4104   +26     
  Misses         53       53           

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[purva-thakre]

This test does not fail locally: https://github.com/unitaryfund/mitiq/actions/runs/10847148259/job/30101612145?pr=2499#step:6:4556

Will dig into this.