🚨 Fixed clang-tidy warnings.

[Drewniok]

Description

This PR implements a few clang-tidy warnings.

Checklist:

• The pull request only contains commits that are related to it.
• I have added appropriate tests and documentation.
• I have added a changelog entry.
• I have created/adjusted the Python bindings for any new or updated functionality.
• I have made sure that all CI jobs on GitHub pass.
• The pull request introduces no new warnings and follows the project's style guidelines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.15%. Comparing base (5c1bac7) to head (821e403).
Report is 77 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #519   +/-   ##
=======================================
  Coverage   98.15%   98.15%           
=======================================
  Files         224      224           
  Lines       31303    31300    -3     
  Branches     1563     1563           
=======================================
- Hits        30726    30724    -2     
+ Misses        577      576    -1     

Files with missing lines	Coverage Δ
...on/algorithms/optimization/simulated_annealing.hpp	100.00% <ø> (ø)
...n/algorithms/physical_design/design_sidb_gates.hpp	98.23% <ø> (ø)
...tion/sidb/assess_physical_population_stability.hpp	96.59% <ø> (ø)
...lgorithms/simulation/sidb/critical_temperature.hpp	97.32% <ø> (ø)
...simulation/sidb/displacement_robustness_domain.hpp	97.53% <ø> (ø)
...maximum_defect_influence_position_and_distance.hpp	100.00% <ø> (ø)
.../sidb/occupation_probability_of_excited_states.hpp	96.66% <ø> (ø)
.../fiction/algorithms/simulation/sidb/quickexact.hpp	98.77% <ø> (-0.02%)	⬇️
...s/simulation/sidb/random_sidb_layout_generator.hpp	95.55% <ø> (ø)
...on/algorithms/simulation/sidb/time_to_solution.hpp	100.00% <ø> (+2.43%)	⬆️
... and 4 more

... and 2 files with indirect coverage changes

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[github-actions]

clang-tidy made some suggestions

[github-actions]

clang-tidy made some suggestions

[github-actions]

clang-tidy made some suggestions