- add mutable criterion and structured query classes that can be easily annotated during validation. Provide converters to convert immutable to mutable and vice versa
- remove validatedstructuredquery
- add validation issues
- remove invalidCriteria from entities

- rename TermCodeValidation to StructuredQueryValidation
- remove ValidationIssues and directly use List<ValidationIssue>

- rename getinvalidcriteria
- modify tests

- add skipValidation parameter to get query and get template

- increase test coverage

- modify swagger file