Cleaner code only supports French VAT Numbers

[kevinobee]

https://github.com/CluedIn-io/Enricher.VatLayer/blob/7b88da3d9aa1b33d16613b9a68bd46a7980abf93/src/Utility/VatNumberCleaner.cs#L20

[kevinobee]

Tests added to branch https://github.com/CluedIn-io/Enricher.VatLayer/tree/bugfix/Only-French-Numbers-Are-Supported based on VAT numbers examples provided by ISS.

These tests show 89 failures when run.

[lovrobiljeskovic]

@kevinobee I fixed this, I forgot to remove commented code for all the regex matchers for each country. I pushed the working commit. However we have 33 tests specifically for GB VAT numbers which still fail; this is due to the VAT numbers provided not matching any company. The VAT numbers themselves are in the proper format, but if they do not match any company according to the VatLayer API, the tests will fail.

I would assume that the VAT numbers which were provided by ISS are outdated/invalid.