Adding tolerance to @turf/boolean-point-on-line

A couple of days ago @DenisCarriere raised the possibility of adding a tolerance threshold to @turf/boolean-point-on-line. Currently the point has to be exactly on the line, there is 0 margin for error.

A few finds from my investigations

• As far as I can work out the current algorithm doesn't really support adding in a tolerance check
• I did find a pretty neat algorithm for finding the distance between a point and a line here
  • we don't really have a module for this currently, is this something we'd like to package up @DenisCarriere ?
  • this is quite a bit slower than the current algorithm (eg half the number of ops per sec) but if it only got called when the tolerance threshold was set that might be acceptable...
• there are a couple of other potential options that I'd like to explore still that would be an entire replacement
  • eg here and here

I knew I should've paid more attention in maths!

Start at the @turf/boolean-point-on-line entry point and review the linked point-to-line distance algorithms and the existing implementation. The issue does not name files or tests, and completion is not defined beyond exploring a tolerance approach and deciding whether a reusable distance module is appropriate.