Allow dict as info field

[tomjholland]

This pull request includes several changes to the pyprobe package, primarily focusing on enhancing type annotations and simplifying class structures. The most important changes involve updating the info field to support nested dictionaries and removing re-definitions of inherited attributes from multiple classes.

Type Annotations and Field Updates:

• pyprobe/cell.py: Updated the info field in the Cell class to support nested dictionaries. This change is reflected in the type annotations and the corresponding field validator. [1] [2] [3]

Codebase Simplification:

• pyprobe/filters.py: Removed inherited attributes such as base_dataframe, info, and column_definitions from multiple classes (Procedure, Experiment, Cycle, Step). This helps in simplifying the class definitions and reducing clutter. [1] [2] [3] [4]
• pyprobe/rawdata.py: Removed the base_dataframe and info attributes from the RawData class and added a detailed docstring for the step_descriptions attribute.

Additional Changes:

• pyprobe/result.py: Updated the info field in the Result class to support nested dictionaries and adjusted the type annotations accordingly. [1] [2]
• pyprobe/filters.py: Removed the import of Field from pydantic as it is no longer needed.