Wire progressive JPEG, AVIF speed, and custom per-format quality to encoder

pixstrip-core/src/pipeline.rs

@@ -21,6 +21,8 @@ pub struct ProcessingJob {
     pub watermark: Option<WatermarkConfig>,
     pub rename: Option<RenameConfig>,
     pub preserve_directory_structure: bool,
+    pub progressive_jpeg: bool,
+    pub avif_speed: u8,
 }
 
 impl ProcessingJob {
@@ -39,6 +41,8 @@ impl ProcessingJob {
             watermark: None,
             rename: None,
             preserve_directory_structure: false,
+            progressive_jpeg: false,
+            avif_speed: 6,
         }
     }