feat: Add --digest CLI option to select digest type

src/modes/save.rs

@@ -35,6 +35,13 @@ pub fn mode_save(
         tags.push("none".to_string());
     }
 
+    // Get the digest type to use
+    let digest_name = args
+        .item
+        .digest
+        .clone()
+        .unwrap_or(DigestType::Sha256.to_string());
+
     let compression_name = args
         .item
         .compression
@@ -55,7 +62,8 @@ pub fn mode_save(
     debug!("MAIN: Compression type: {}", compression_type);
 
     // Create a new digest engine
-    let digest_type = DigestType::Sha256;
+    let digest_type = DigestType::from_str(&digest_name)
+        .unwrap_or(DigestType::Sha256);
     let mut digest_engine = get_engine(digest_type);
     
     let mut item = db::Item {