fix: correct compression module imports

src/compression_engine/lz4.rs

@@ -6,7 +6,7 @@ use std::path::PathBuf;
 
 use lz4_flex::frame::{FrameDecoder, FrameEncoder};
 
-use crate::compression::CompressionEngine;
+use crate::compression_engine::CompressionEngine;
 
 #[derive(Debug, Eq, PartialEq, Clone, Default)]
 pub struct CompressionEngineLZ4 {}