[Feature] Add Least Angle Regression

[aswin-1111]

Implementation of the Least Angle Regression Algorithm

Note: This PR addresses the same feature as #115, which has been inactive.

Hope this implementation meets the library standards. If any further changes are required, feel free to modify it.

[codecov]

Codecov Report

❌ Patch coverage is 77.17391% with 63 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.92%. Comparing base (5afd26c) to head (b28824b).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
algorithms/linfa-lars/src/algorithm.rs	82.64%	38 Missing ⚠️
algorithms/linfa-lars/src/lib.rs	27.27%	16 Missing ⚠️
algorithms/linfa-lars/src/hyperparams.rs	74.28%	9 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master     #421    +/-   ##
========================================
  Coverage   76.91%   76.92%            
========================================
  Files         101      104     +3     
  Lines        7045     7321   +276     
========================================
+ Hits         5419     5632   +213     
- Misses       1626     1689    +63     

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[relf]

Thank you for this contribution! I find it in pretty good shape, I've just made a first pass mainly wrt the documentation.

[relf]

Thank you!