reactivate ruff for advanced examples and include them in tests

[quaquel]

This reactivates ruff for advanced examples, applies the related fixes, and adds the advanced examples to test_examples.

[EwoutH]

Awesome, thanks!

[github-actions]

Performance benchmarks:

Model	Size	Init time [95% CI]	Run time [95% CI]
BoltzmannWealth	small	🔴 +8.4% [+6.8%, +10.1%]	🔵 -0.5% [-0.7%, -0.4%]
BoltzmannWealth	large	🔵 -0.4% [-0.8%, +0.1%]	🔵 +0.1% [-0.9%, +1.1%]
Schelling	small	🔵 -0.6% [-1.0%, -0.2%]	🔵 -1.3% [-1.6%, -1.1%]
Schelling	large	🔵 -0.6% [-1.5%, +0.4%]	🔵 -1.1% [-2.7%, +0.5%]
WolfSheep	small	🔵 -0.4% [-0.6%, -0.1%]	🔵 +1.4% [+1.2%, +1.6%]
WolfSheep	large	🔵 -2.4% [-3.8%, -1.0%]	🟢 -6.8% [-8.8%, -4.3%]
BoidFlockers	small	🔵 -0.8% [-1.3%, -0.2%]	🔵 +1.0% [+0.4%, +1.7%]
BoidFlockers	large	🔵 +0.5% [+0.1%, +1.0%]	🔵 +0.4% [-0.2%, +0.8%]