fix: config rework

[Krande]

use a new datastructure for handling configuration of adapy using either a config file or using environment variables

[codspeed-hq]

CodSpeed Performance Report

Merging #111 will not alter performance

_{Comparing fix/config-rework (b123f46) with main (f5ad492)}

Summary

✅ 5 untouched benchmarks

[github-actions]

👋 Hi there! I have checked your PR and found no issues. Thanks for your contribution!

PR Review:

I found no pr-related issues.

• ✅ PR title is ok
• ✅ Release label is ok
• ✅ SOURCE_KEY is set as a secret
• ✅ Calculated next version: "0.2.18"

Python Review:

I found no python-related issues.

Python Linting results:

• ✅ Isort
• ✅ Black
• ✅ Ruff

Python Packaging results:

• ✅ I found the PYPI_API_TOKEN secret.

Packaging Type	Package Name	Version
pyproject.toml	ada-py	0.2.17
pypi	ada-py	0.2.17