ci: added matrix tests for windows, linux and darwin

[MarvinJWendt]

Description

Added matrix tests for windows, linux and darwin.

Scope

What is affected by this pull request?

• Bug Fix
• New Feature
• Documentation
• Other

To-Do Checklist

• I tested my changes
• I have commented every method that I created/changed
• I updated the examples to fit with my changes
• I have added tests for my newly created methods

[codecov]

Codecov Report

Merging #295 (eac9822) into master (091aa52) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #295   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           23        23           
  Lines         1306      1306           
=========================================
  Hits          1306      1306           

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