docs: use navigation of mkdocs for tutorials

[lars-reimann]

Summary of Changes

List different tutorials in mkdocs.yml, so the navigation elements of the created site get populated properly.

[lars-reimann]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ MARKDOWN	markdown-link-check	1		0	0.44s
✅ REPOSITORY	git_diff	yes		no	0.02s

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Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff

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[codecov]

Codecov Report

Merging #33 (0b75dc8) into main (adaf1f7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #33   +/-   ##
=======================================
  Coverage   91.51%   91.51%           
=======================================
  Files          45       45           
  Lines        1132     1132           
=======================================
  Hits         1036     1036           
  Misses         96       96           

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[lars-reimann]

🎉 This PR is included in version 0.3.0 🎉

The release is available on:

• v0.3.0
• GitHub release

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