Update detect_oscillatory_events

[wulfdewolf]

This short PR updates detect_oscillatory_events to use the hilbert transform vs. filt.filt before.

It further adds a snippet at the end of the new ripple detection tutorial where it is introduced and uses as a shorter version of everything that came before.

I've further added input type checks to the function and a test for them.

Addresses #587

[codecov]

Codecov Report

❌ Patch coverage is 95.65217% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
pynapple/process/signal.py	95.65%	1 Missing and 1 partial ⚠️

Files with missing lines	Coverage Δ
pynapple/process/signal.py	91.66% <95.65%> (+2.19%)	⬆️

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