feat: track memoization stats

[WinPlay02]

Closes partially #44

Summary of Changes

• track more stats: last access, computation time, last access time, memory usage
• refactored memoization logic into a new class
• updated to safe-ds library 0.19

[github-actions[bot]]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	black	3	0	0	0.77s
✅ PYTHON	mypy	3		0	2.29s
✅ PYTHON	ruff	3	0	0	0.03s
✅ REPOSITORY	git_diff	yes		no	0.01s

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (9ee959d) 100.00% compared to head (b501fce) 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #51 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 9 10 +1 Lines 436 499 +63 ========================================= + Hits 436 499 +63 ```

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[WinPlay02]

I would propose to merge the tracking of stats (this PR) first and continue the strategies for memoizing and removing in a follow-up PR.

[lars-reimann]

I would propose to merge the tracking of stats (this PR) first and continue the strategies for memoizing and removing in a follow-up PR.

I'm all for that.

[WinPlay02]

I've made some changes that were easier to implement directly than to describe them.

@WinPlay02 Please take a quick look whether I broke anything and then feel free to merge if you're happy with it (or complain if you are not).

This should be good to go

[lars-reimann]

:tada: This PR is included in version 0.6.0 :tada:

The release is available on:

• v0.6.0
• GitHub release

Your semantic-release bot :package::rocket: