Fix ClassCastExeption + improve compatibleConstructor detection

[1robie]

This pull request strengthens type safety and constructor compatibility checks in the schema and DTO consumer logic. The main improvements include stricter validation of object types when adding schema columns, enhanced handling of overloaded constructors, and additional unit tests to verify these behaviors.

Type validation improvements

• Added explicit type checks and error handling in schemaFromType to ensure that objects passed for schema column values match the expected type (e.g., Number for numeric types, Boolean for booleans, UUID for UUID columns, and Date for date columns). Throws clear IllegalArgumentException messages when mismatches occur. [1] [2]

Constructor compatibility enhancements

• Updated createConsumerFromTemplate to check all constructors for compatibility with the DTO's fields, supporting overloaded constructors and ensuring that the number of non-synthetic constructor parameters matches the number of fields. Throws an exception if no compatible constructor is found.

Test coverage improvements

• Added OverloadedTemplateDTO and IncompatibleTemplateDTO classes in test code to verify handling of overloaded and incompatible constructors.
• Added unit tests to confirm that consumers can be created for DTOs with overloaded constructors and that an exception is thrown when no compatible constructor exists.