migrate to external algorithm crate, add DFA1a analysis

[mat-kie]

Changes

• migrate hrv statistics calculation to hrv-algos crate
• Define statistics window as # samples instead of seconds
• refactor Hrv statistics model to unary getters and setters
• add DFA-alpha and SDRR time series data
• migrate Outlier filter from moving window filter to a more sophisticated filter

[codecov]

Codecov Report

Attention: Patch coverage is 82.06687% with 59 lines in your changes missing coverage. Please review.

Project coverage is 60.85%. Comparing base (b43183d) to head (98ce3b1).
Report is 19 commits behind head on main.

Files with missing lines	Patch %	Lines
src/view/acquisition.rs	0.00%	45 Missing ⚠️
src/model/hrv.rs	94.26%	9 Missing ⚠️
src/components/application.rs	91.66%	2 Missing ⚠️
src/components/bluetooth.rs	97.05%	1 Missing ⚠️
src/components/measurement.rs	97.91%	1 Missing ⚠️
src/view/overview.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #13      +/-   ##
==========================================
- Coverage   66.11%   60.85%   -5.26%     
==========================================
  Files          11       10       -1     
  Lines        1260      838     -422     
==========================================
- Hits          833      510     -323     
+ Misses        427      328      -99     

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