[ENH] Implement (s-)IDK² anomaly detector

[SebastianSchmidl]

Describe the feature or idea you want to propose

IDK² and s-IDK² (sliding window) can be used for anomalous subsequence detection.

Describe your proposed solution

Implement both variants of IDK² directly in aeon:

• Paper: Isolation Distribution Kernel base paper: https://dl.acm.org/doi/10.1145/3394486.3403062, IDK for TSAD:https://www.vldb.org/pvldb/vol15/p2321-liu.pdf
• Code: https://github.com/IsolationKernel/Codes/tree/main/IDK/TS

Describe alternatives you've considered, if relevant

No response

Additional context

No response