cvmts: replace jpeg-turbo native module with new rust module

This module also does threadpooling internally, so we don't need Piscina anymore (which I'm pretty sure was actually bottlenecking.)

jpegturbo-rs/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "jpegturbo-rs"
+description = "Rust powered JPEGTurbo sex"
+version = "0.1.0"
+edition = "2021"
+exclude = ["index.node"]
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+neon = "1"
+once_cell = "1.19.0"
+tokio = { version = "1.38.0", features = [ "rt", "rt-multi-thread" ] }
+turbojpeg-sys = "1.0.0"