Add RFC for ADBC Driver for Presto

[jja725]

Summary

This RFC proposes an official ADBC (Arrow Database Connectivity) driver for Presto, implemented in Go on top of the ADBC driverbase-go framework and wrapping the Presto Go client v2 (RFC-0022).

• Enables any ADBC-capable application (Python, R, Go, C/C++, Rust, Java) to query Presto and receive Arrow record batches through the standard ADBC driver manager
• Requires no server-side changes — pure client-side component
• Follows the same architecture as the existing Trino ADBC driver in the adbc-drivers organization
• A working prototype exists at jja725/adbc-presto with 85 passing integration tests

Related:

• adbc-drivers/dev#230
• RFC-0022: Go Client Library v2
• prestodb/rfcs#64 — complementary server-side native ADBC connector RFC

[jja725]

@ethanyzhang @aditi-pandit would appreciate your feedback