feat: cleaner public api

[lars-reimann]

Closes #53

Summary of Changes

Define a small public interface consisting of

• safeds_runner.file_mtime,
• safeds_runner.memoized_call,
• safeds_runner.save_placeholder.

These are used by the code generator of the DSL.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	black	12	0	0	0.97s
✅ PYTHON	mypy	12		0	2.36s
✅ PYTHON	ruff	12	0	0	0.03s
✅ REPOSITORY	git_diff	yes		no	0.02s

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 ✅

Comparison is base (50f30a3) 100.00% compared to head (a61384e) 100.00%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #54   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           10        11    +1     
  Lines          499       500    +1     
=========================================
+ Hits           499       500    +1     

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

[lars-reimann]

@WinPlay02 Would you mind reviewing this?

[lars-reimann]

It's also quite interesting that when I also add start_server to src/safeds_runner/__init__.py, the runtime of the tests increases from roughly 15s to 33s. This is apparently due to the imports of Image and Table in src/safeds_runner/server/_json_encoder.py, which then gets imported transitively.

[WinPlay02]

Should be good to merge

[lars-reimann]

🎉 This PR is included in version 0.7.0 🎉

The release is available on:

• v0.7.0
• GitHub release

Your semantic-release bot 📦🚀