Remove wellknown lib in favor of internal parser

[offtherailz]

Description

WKT toGeoJSON - fromGeoJSON functions in Utils/OGC are good replacements for wellknown lib (5kb dependency, so small).

The difference is that our version do not support 3D geometries yet and wellknown lib has some bug in parser. (spaces between name and parenthesis)

We should replace wellknown to avoid to depend from a lib that has his bugs and is not updated in 6 years. Also supporting 3D geoms could be a good thing.

What kind of improvement you want to add? (check one with "x", remove the others)

• Minor changes to existing features
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

Other useful information