chore(indexers): updated vectorstore types

[rileyok-ons]

✨ Summary

Fixes the typing for vectorstore to add typehints to the methods and resolve type errors with internal .vectors
Also fixes bug with deptry on pre-commit hook
Also updates server pydantic models to patch out deprecated extra definition (now uses configdict)
Resolves #142

📜 Changes Introduced

• adds in correct entrypoint for deptry in pre-commit docker

• adds proper init typehints for vectorstore

• adds support for pathlike for filename inputs

• Feature implementation (feat:) / bug fix (fix:) / refactoring (chore:) / documentation (docs:) / testing (test:)

• Updates to tests and/or documentation

• Terraform changes (if applicable)

✅ Checklist

Please confirm you've completed these checks before requesting a review.

• Code passes linting with Ruff
• Security checks pass using Bandit
• API and Unit tests are written and pass using pytest
• Terraform files (if applicable) follow best practices and have been validated (terraform fmt & terraform validate)
• DocStrings follow Google-style and are added as per Pylint recommendations
• Documentation has been updated if needed

🔍 How to Test

Run usual demo to check if it inits correctly, then try inputting in Path as file location, check if intellisense looks better

[frayle-ons]

LGTM, one small change requested - and can we confirm this will work okay with quartodocs.

[lukeroantreeONS]

This all looks good to me - but before merging, can we check that initialising a VectorStore with a CSV within a GCP Bucket still works with the new checks added? (I know we haven't advertised that functionality yet, but it would be a shame to break it)