feat: Add DynamicRollingAverageThresholdPolicy

[robinholzi]

Motivation

Alongside the percentile-based dynamic threshold calibration, we also want to try out and offer a rolling average approach that checks for the deviation between the current distance and the rolling average and see if it exceeds a certain (relative/absolute) threshold.

[github-actions]

^{( % to main)
( % to main)}

[robinholzi]

@MaxiBoether This should also be fairly straightforward, just another variation of dynamic thresholds

[MaxiBoether]

LGTM, although I could not immediately understand why the min(max) stuff can occur

[codecov]

Codecov Report

Attention: Patch coverage is 91.66667% with 3 lines in your changes missing coverage. Please review.

Project coverage is 85.12%. Comparing base (91c5fa3) to head (23a4060).
Report is 1 commits behind head on main.

Files	Patch %	Lines
...n/supervisor/internal/triggers/datadrifttrigger.py	66.66%	2 Missing ⚠️
...ervisor/internal/triggers/drift/decision_policy.py	95.23%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #593   +/-   ##
=======================================
  Coverage   85.11%   85.12%           
=======================================
  Files         244      244           
  Lines       10748    10768   +20     
=======================================
+ Hits         9148     9166   +18     
- Misses       1600     1602    +2     

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