Add function (several methods) to compute cubic bezier curves. 2D & 3D and geogs.

[joa-quim]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 97.14286% with 2 lines in your changes missing coverage. Please review.

Project coverage is 86.27%. Comparing base (a8fad75) to head (ccba920).
Report is 412 commits behind head on master.

Files with missing lines	Patch %	Lines
src/beziers.jl	97.14%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1593      +/-   ##
==========================================
- Coverage   89.55%   86.27%   -3.29%     
==========================================
  Files         134      148      +14     
  Lines       17682    20427    +2745     
==========================================
+ Hits        15835    17623    +1788     
- Misses       1847     2804     +957     

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