Raw-rs: run tests in parallel (#1968)

* Run raw-rs tests in parallel

* cargo fmt

* Fix clippy warnings

* Use Fast CompressionType to speed up the tests

* Fix benches

* Use cfg_attr instead of cfg.

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Co-authored-by: hypercube <0hypercube@gmail.com>
Co-authored-by: Keavon Chambers <keavon@keavon.com>

libraries/raw-rs/Cargo.toml

@@ -13,7 +13,7 @@ repository = "https://github.com/GraphiteEditor/Graphite/tree/master/libraries/r
 documentation = "https://docs.rs/raw-rs"
 
 [features]
-raw-rs-tests = ["dep:image", "dep:libraw-rs", "dep:reqwest"]
+raw-rs-tests = ["dep:image", "dep:libraw-rs", "dep:reqwest", "dep:rayon"]
 
 [dependencies]
 # Local dependencies
@@ -33,3 +33,4 @@ reqwest = { workspace = true, optional = true }
 
 # Optional dependencies (should be dev dependencies, but Cargo currently doesn't allow optional dev dependencies)
 libraw-rs = { version = "0.0.4", optional = true }
+rayon = { version = "1.10.0", optional = true }