feat: added moving average plot

[Gerhardsa0]

Closes #521

Summary of Changes

• Renamed plot_lagplot -> plot_lag_plot
• Added moving average plot,

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	black	6	0	0	0.96s
✅ PYTHON	mypy	6		0	1.88s
✅ PYTHON	ruff	6	0	0	0.16s
✅ REPOSITORY	git_diff	yes		no	0.14s

See detailed report in MegaLinter reports
Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff

MegaLinter is graciously provided by

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (f44c34d) to head (434c475).
Report is 211 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #551   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           50        52    +2     
  Lines         2852      2868   +16     
=========================================
+ Hits          2852      2868   +16     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.