To improve Developer Experience (DX) and simplify access to nested data fields, we should add a get(field) method to Neo.data.Record.

Currently, accessing unmodeled nested data requires manual parsing or Neo.ns usage, as seen in src/grid/Row.mjs.

The get() method will:

1. Return the property value if the field is defined in the Model.
2. Fallback to Neo.ns lookup on the raw data object for unmodeled nested paths.

This change requires updating src/data/RecordFactory.mjs and refactoring src/grid/Row.mjs.