Implement ExplicitEntities Annotation for Enhanced DAO and Entity Management

[teogor]

This pull request introduces the ExplicitEntities annotation for improved clarity, type safety, and mapping in your DAO classes.

Benefits:

• Enhanced Type Safety: Explicitly listing managed entities prevents potential type errors and improves code understanding.
• Safer Mapping: Precise entity information allows code generation tools to perform more accurate DAO-entity mappings.
• Clearer Intent: The annotation makes the relationship between a DAO and its entities explicit, boosting code readability and maintainability.

Key Features:

• An attribute for specifying the list of associated entity classes.
• An optional attribute to mark the DAO as managing only the listed entities.

Usage:

Annotate your DAO classes with @ExplicitEntities and provide the list of managed entities:

@ExplicitEntities(entities = [MyEntity1::class, MyEntity2::class])
class MyDao {
    // ...
}

closes #9