Allow using CairoMakie or GLMakie using the menu()

[ufechner7]

• Add CairoMakie to examples/Project.toml
• Add the menu entries CairoMakie!.activate() and GLMakie.activate()
• Use pdf as format for saving plots if CairoMakie is activated
• Create the output folder in the install script
• Use the output folder in all examples as folder to store plots
• Santinize the file names to use _ instead of space
• Santinize the file manes to use pct instead of %
• Update docu
• Add tests

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[Copilot]

Pull request overview

This PR updates the examples and plotting helpers to support switching between GLMakie and CairoMakie via the examples/menu.jl menu, and standardizes plot output handling (default formats, output directory, and filename sanitization).

Changes:

• Add CairoMakie to the examples environment and provide menu options to activate GLMakie or CairoMakie at runtime.
• Make Makie save_plot choose a backend-aware default file extension and sanitize output filenames.
• Route example outputs to a shared output/ directory and ensure it’s created during installation.

Reviewed changes

Copilot reviewed 12 out of 14 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
ext/VortexStepMethodMakieExt.jl	Backend-aware default data_type, plus filename sanitization for Makie saves.
ext/VortexStepMethodControlPlotsExt.jl	Filename sanitization for ControlPlots saves.
examples/menu.jl	Adds CairoMakie dependency and menu entries to activate plotting backends.
examples/*.jl	Standardize output directory usage and saving toggles across examples.
examples/Project.toml	Adds CairoMakie to the examples project.
bin/install	Creates output/ directory during installation.
docs/src/examples.md	Adds backend comparison documentation.
NEWS.md	Notes the new menu backend selection feature.
.gitignore	Ignores output directories.

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[Copilot]

Pull request overview

Copilot reviewed 13 out of 15 changed files in this pull request and generated 1 comment.

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