Introspect database schema and check indexes when searching

Will be great if Micronaut will have information about the database indexes, and emit a warning(or maybe an error depending on configuration) in case there are some methods that do not use indexes for searching.

Or methods can have a special annotation, and only for these methods to check the indexes.

The issue proposes database schema and index introspection, with warnings or configurable errors for methods that search without indexes, possibly limited to annotated methods. No files, tests, or entry points are named; first locate the repository’s query-generation and database metadata handling, then clarify the intended scope and completion criteria before implementing.

Written by the indexing model from the issue text.