v0.9.0 ValidationPath and userContext

Features:

• Add ValidationResult.errors containing ValidationError with a ValidationPath to safely inspect and use validation error and paths
• Add constrain() in ValidationBuilder as a replacement for addConstraint, directly allowing path and userContext to be set
• Add path() in ValidationBuilder to adjust the reported validation path of a validation error
• Add userContext() in ValidationBuilder to add any data to the reported validation error
• Add various utilities to Validation and ValidationResult, or lists of them

Deprecations and breaking changes:

• Move constraints from io.konform.validation.jsonschema to io.konform.validation.constraints, deprecations can be solved by replacing the import
• Remove ValidationBuilder.has. Can be replaced by directly adding the validation in the builder
• Deprecate addConstraint(), use constrain() instead. templateValues are not supported therein, directly add them to the hint.