Fix the Surreal.patch method

[Wouterkoorn]

Change request method type from "modify" to "patch". And fix type annotations.

What is the motivation?

Surreal.patch is currently not usable.
Fixing type annotations improved developer experience.

Type of Change

• 📚 Examples / docs / tutorials / dependencies update
• 🔧 Bug fix (non-breaking change which fixes an issue)
• 🥂 Improvement (non-breaking change which improves an existing feature)
• 🚀 New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to change)
• 🔐 Security fix

What does this change do?

1. Changes the Surreal.patch request method type from "modify" to "patch"
2. Changes the Surreal.patch's data parameter type to Optional[List[Dict[str, Any]]]
3. Changes the Surreal.patch return type to Union[dict[str, Any], List[Dict[str, Any]]]

What is your testing strategy?

mypy OK
pre-commit OK
./scripts/run_tests.sh OK
manual testing OK

Is this related to any issues?

Yes: #99

Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

[Wouterkoorn]

This is for backwards compatibility, making the change non-breaking.
The typing was Optional, but the server requires an array, None is invalid.

[tobiemh]

Closing this pull-request as the latest codebase has now been significantly updated, now making use of a native Python with binary communication with remote databases, and support for embedded database usage. The native Python library now has support for custom types, including datetimes, durations, decimals, geojson types, Record IDs, ranges, and tables 🎉.