feat: microgen - adds testing directory (#2296)

* chore: removes old proof of concept

* removes old __init__.py

* Adds two utility files to handle basic tasks

* Adds a configuration file for the microgenerator

* Removes unused comment

* chore: adds noxfile.py for the microgenerator

* feat: microgen - adds two init file templates

* feat: adds _helpers.py.js  template

* Updates with two usage examples

* feat: adds two partial templates for creating method signatures

* feat: Add microgenerator __init__.py

Migrates the empty __init__.py file to the microgenerator package.

* feat: Add AST analysis utilities

Introduces the CodeAnalyzer class and helper functions for parsing Python code using the ast module. This provides the foundation for understanding service client structures.

* feat: Add source file analysis capabilities
    Implements functions to analyze Python source files, including:
    - Filtering classes and methods based on configuration.
    - Building a schema of request classes and their arguments.
    - Processing service client files to extract relevant information.

* feat: adds code generation logic

* removes extraneous content

* feat: microgen - adds code generation logic

* feat: microgen - adds main execution and post-processing logic

* minor tweak to markers

* feat: Add testing directory\n\nAdds the scripts/microgenerator/testing directory.

* Update scripts/microgenerator/testing/constraints-3.13.txt

* Update scripts/microgenerator/generate.py

* Update scripts/microgenerator/generate.py

* Update scripts/microgenerator/generate.py

Author: chalmerlowe