WIP: support RocksDB databases in sourmash proper through FFI #6409

Job	Run time
Check if cbindgen runs cleanly for generating the C headers	28s
Check	19s
coverage	1m 18s
Lints (beta)	15s
Lints (stable)	19s
minimum_rust_version	34s
Publish (on tags, dry-run otherwise)	6m 22s
test (beta)	20s
test_all_features	43s
Check if wasm-pack builds a valid package for the sourmash crate	43s
test (stable)	1m 47s
test (windows)	1m 45s
test (macos)	1m 48s
	16m 41s

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