dbt-semantic-interfaces contains the shared semantic classes, default
validation, and tests designed to be used by both the dbt-core and MetricFlow
projects. By centralizing these shared resources, we aim to maintain consistency
and reduce code duplication across both projects.

Features:

- Protocols for shared semantic classes: Define the interfaces and common
  attributes that must be implemented by the objects in both projects.
- Validation: Ensure that the objects comply with the expected structure and
  constraints.
- Tests: Ensure that the objects' behavior is consistent and correct across both
  projects.