feat: Table multi-delete + refactoring core libs

[mure]

• This contribution adheres to CONTRIBUTING.md.

What does this Pull Request accomplish?

• Adds delete_tables method to remove multiple tables in one call
• Refactors core.ApiError to be a Pydantic model so we can nest it in the delete partial success response
• Adds response body de-serialization that can handle Union types
• Adds wrappers around Uplink HTTP method decorators with naive typing to fix mypy errors and make client implementation simpler

What testing has been done?

• Added automated tests for delete methods
• Automated tag tests should hopefully cover ApiError refactor