Impl Mul<Vector/Point> for matrices

[simonask]

Closes #67

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.30%. Comparing base (9aedfab) to head (702ca99).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #75   +/-   ##
=======================================
  Coverage   99.30%   99.30%           
=======================================
  Files          22       22           
  Lines        5883     5919   +36     
=======================================
+ Hits         5842     5878   +36     
  Misses         41       41           

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