CoreCaptcha NuGet Package

This client library enables working with the Renet Consulting CoreCaptcha Serverless service for user validation.
For this release see notes - https://github.com/RenetConsulting/angularcore.net/tree/master/Services/CoreCaptcha/README.md and https://github.com/RenetConsulting/angularcore.net/tree/master/Services/CoreCaptcha/CHANGELOG.md
in addition to the breaking changes https://github.com/RenetConsulting/angularcore.net/tree/master/Services/CoreCaptcha/BreakingChanges.txt
CoreCaptcha Azure Function - https://github.com/RenetConsulting/angularcore.net/tree/master/Services/CoreCaptchaAzure.