duckdb: marshal query results via C API #13331

Job	Run time
validate-workflow-yaml	16s
Python (lint)	24s
lint-toml	16s
Rust (lint, no default)	5m 0s
DuckDB extension build	1s
Rust build (with compio dispatcher)	1s
Rust build (default features)	4s
Rust build (with tokio dispatcher)	1s
Java	23s
Rust build (wasm32 with default features)	5m 1s
Rust build (with tokio+compio dispatcher)	1s
wasm-integration	23s
Rust build (all-features)	1s
Rust (lint)	1s
Check build with minimal dependencies	1s
Rust (tests)	1s
License Check and Audit Check (bans licenses sources)	22s
License Check and Audit Check (advisories)	32s
Benchmark with Codspeed	1s
Python (test)	25s
miri	27s
Rust (docs)	1s
Check generated proto/fbs files are up to date	23s
	14m 6s

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