build(cli): expose adbc feature flag

Forward the CLI crate's optional adbc feature to ggsql/adbc so the CLI can be built against the ADBC reader from PR posit-dev#422 without adding URI, Snowflake, or dbt profile plumbing here.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: dataders

ggsql-cli/Cargo.toml

@@ -41,6 +41,7 @@ duckdb = ["ggsql/duckdb"]
 parquet = ["ggsql/parquet"]
 sqlite = ["ggsql/sqlite"]
 odbc = ["ggsql/odbc"]
+adbc = ["ggsql/adbc"]
 vegalite = ["ggsql/vegalite"]
 builtin-data = ["ggsql/builtin-data"]
 all-readers = ["duckdb", "sqlite", "odbc"]