* fix: add stored values support for dataset columns
This commit introduces stored values functionality for dataset columns, including:
- Adding a `stored_values` flag to column deployment requests
- Implementing a mechanism to store column values during dataset deployment
- Updating data analyst and SQL generation agents to leverage stored values
- Creating a new utility module for stored values search and management
* refactor(stored_values): improve stored values implementation and schema management
This commit enhances the stored values functionality with several key improvements:
- Update schema and table creation to use organization ID as schema name
- Modify stored values storage to include column ID
- Improve value extraction and embedding generation process
- Remove unnecessary distance calculation in search results
- Clean up unused values_engine module
- Introduced a new `assets` module to handle asset-related routes.
- Updated the user router to nest the `assets` routes under the user ID path, enhancing the organization of API endpoints.
- This change improves the structure and maintainability of the user-related routes in the API.
dal