Add webhook CRUD methods

AccessLevel changes

update API methods

remove charset from content-type response when deserializing

breaking changes for python lib - update to openapi gen 7.5

update pypi package

introduced new type of template - template editor; Size of MessageAtt…

…achment added; added Predicted Score and Status to EmailValidationResult

Switching to python-prior OpenAPI generator due to breaking change ma…

…de in latest version

update to latest API changes

API update