FIX: [sentinel] Modify detection logic

[narumiruna]

This pull request includes significant changes to the anomaly detection strategy and configuration. The most important changes involve updating the configuration settings, modifying the detection logic, and improving the handling of historical data and notifications.

Configuration Updates:

• config/sentinel.yaml: Removed the persistence settings and added multiple new exchange strategies with consistent parameters for different symbols.

Detection Logic Modifications:

• pkg/ensemble/iforest/forest.go: Removed the DetectionType and related logic, simplified the threshold handling, and updated the Options struct. [1] [2] [3]

Strategy Enhancements:

• pkg/strategy/sentinel/strategy.go: Updated the Strategy struct to include new fields (Proportion, NumSamples), added validation for these fields, and modified the Defaults method to set new default values. [1] [2] [3]
• Improved the handling of new K-lines and the training of the isolation forest, including the calculation of volumes and sample generation. [1] [2] [3]
• Enhanced the notification mechanism to check thresholds and quantiles before sending notifications.

These changes collectively improve the robustness and flexibility of the anomaly detection strategy.