Feature request: support open_with_flags for read-only opening of database

[fidraC]

Seems to be supported upstream: tursodatabase/libsql@befd735

But no bindings.

Relevant issues:

• Support readonly connections libsql-client-ts#338
• Support for read-only databases in the Rust crate libsql#344
• Added:Support for read-only databases in the Rust crate. libsql#347