Path Bool library code cleanup (#2000)

* Remove log statements

* Add feature gates to functions in path.rs

* Fix infinite parsing loop and add new test

* License tweaks

* Remove trailing zero in whole number floats

* Flatten visual-tests directory

* Code review

* Clean up printlines

* Add error handling to path parsing

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

libraries/path-bool/visual-tests/real-03/intersection.svg

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