feat: Port VH-Lab/DID-matlab to Python

[google-labs-jules]

This change ports the VH-Lab/DID-matlab project to Python.

The key changes include:

• Porting the core libraries from Matlab to Python, including did.common, did.datastructures, did.db, and did.file.
• Replacing the mksqlite dependency with Python's built-in sqlite3 module in the did.implementations.sqlitedb implementation.
• Porting the core classes, including Database, Document, DocumentService, Query, IDO, and BinaryDoc.
• Porting the test suite from Matlab's unittest framework to Python's unittest framework.
• Adding documentation using mkdocs, with pages for the main modules.
• Creating a README.md file with instructions for setting up the environment and running the tests.
• Creating a requirements.txt file with all the necessary dependencies.

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PR created automatically by Jules for task 12098250431332430071

[google-labs-jules]

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