Add support for Typescript 5.2's using keyword

[twschiller]

Is your feature request related to a problem? Please describe.

• To avoid memory leaks, IDB users need to clean up database resources
• Typescript 5.2 introduced a using keyword to perform resource cleanup when a resource exits lexical scope

Describe the solution you'd like

• Add a Symbol.dispose handler on the resource returned from openDB so Typescript 5.2+ users can use the using keyword to automatically close the DB connection