Add smesolve solver

[albertomercurio]

Checklist

Thank you for contributing to QuantumToolbox.jl! Please make sure you have finished the following tasks before opening the PR.

• Please read Contributing to Quantum Toolbox in Julia.
• Any code changes were done in a way that does not break public API.
• Appropriate tests were added and tested locally by running: make test.
• Any code changes should be julia formatted by running: make format.
• All documents (in docs/ folder) related to code changes were updated and able to build locally by running: make docs.
• (If necessary) the CHANGELOG.md should be updated (regarding to the code changes) and built by running: make changelog.

Request for a review after you have completed all the tasks. If you have not finished them all, you can also open a Draft Pull Request to let the others know this on-going work.

Description

We finally also have smesolve!

[codecov]

Codecov Report

Attention: Patch coverage is 81.60000% with 23 lines in your changes missing coverage. Please review.

Project coverage is 93.70%. Comparing base (c5ee417) to head (ee054d6).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/time_evolution/time_evolution.jl	55.55%	20 Missing ⚠️
src/qobj/superoperators.jl	91.66%	1 Missing ⚠️
src/time_evolution/mesolve.jl	50.00%	1 Missing ⚠️
src/time_evolution/ssesolve.jl	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #389      +/-   ##
==========================================
+ Coverage   93.59%   93.70%   +0.11%     
==========================================
  Files          44       45       +1     
  Lines        2827     2893      +66     
==========================================
+ Hits         2646     2711      +65     
- Misses        181      182       +1     

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