Adds simulated annealing optimiser

[BradyPlanden]

Description

Adds an Simulated Annealing implementation with corresponding tests.

Issue reference

Fixes #618

Review

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• Updated the CHANGELOG.md in reverse chronological order (newest at the top) with a concise description of the changes, including the PR number.
• Noted any breaking changes, including details on how it might impact existing functionality.

Type of change

• New Feature: A non-breaking change that adds new functionality.
• Optimization: A code change that improves performance.
• Examples: A change to existing or additional examples.
• Bug Fix: A non-breaking change that addresses an issue.
• Documentation: Updates to documentation or new documentation for new features.
• Refactoring: Non-functional changes that improve the codebase.
• Style: Non-functional changes related to code style (formatting, naming, etc).
• Testing: Additional tests to improve coverage or confirm functionality.
• Other: (Insert description of change)

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• The documentation builds: $ nox -s doctest

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• Code is well-commented, especially in complex or unclear areas.
• Added tests that prove my fix is effective or that my feature works.
• Checked that coverage remains or improves, and added tests if necessary to maintain or increase coverage.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.24%. Comparing base (9df5000) to head (8696cea).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #619      +/-   ##
===========================================
+ Coverage    99.22%   99.24%   +0.01%     
===========================================
  Files           62       63       +1     
  Lines         4536     4626      +90     
===========================================
+ Hits          4501     4591      +90     
  Misses          35       35              

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[NicolaCourtier]

Thanks for this addition @BradyPlanden