Extract SQL facade use methods to common method, add use_schema

[sfc-gh-fcampbell]

Pre-review checklist

• [x] I've confirmed that instructions included in README.md are still correct after my changes in the codebase.
• [x] I've added or updated automated unit tests to verify correctness of my new code.
• [ ] I've added or updated integration tests to verify correctness of my new code.
• [ ] I've confirmed that my changes are working by executing CLI's commands manually on MacOS.
• [ ] I've confirmed that my changes are working by executing CLI's commands manually on Windows.
• [x] I've confirmed that my changes are up-to-date with the target branch.
• [ ] I've described my changes in the release notes.
• [x] I've described my changes in the section below.

Changes description

• Adds _use_object_optional to unify _use_role_optional, _use_database_optional, and _use_warehouse_optional
• Adds _use_schema_optional
• Adds handle_unclassified_error handling to get_account_event_table
• Adds InsufficientPrivilegesError to be used in future PRs

[sfc-gh-pjafari]

Facade changes lgtm