Wrap the GEOS `CoverageIsValid` function

[peterstace]

Description

This function checks to see if a polygon coverage is valid or not.

Check List

Have you:

• Added unit tests? Yes.

• Add cmprefimpl tests? (if appropriate?) N/A

• Updated release notes? (if appropriate?) Yes.

Related Issue

• N/A

[peterstace]

Thanks for reviewing @albertteoh ! 🥳