adding delay effect

cfg/config.yaml

@@ -16,12 +16,13 @@ max_kept_effects: -1
 max_removed_effects: -1
 shuffle_kept_effects: True
 shuffle_removed_effects: False
-num_classes: 4
+num_classes: 5
 effects_to_use:
   - compressor
   - distortion
   - reverb
   - chorus
+  - delay
 effects_to_remove:
   - compressor
   - distortion

cfg/effects/all.yaml

@@ -28,4 +28,13 @@ effects:
       min_wet_dry: 0.2
       max_wet_dry: 0.8
       min_width: 0.2
-      max_width: 1.0
+      max_width: 1.0
+  delay:
+      _target_: remfx.effects.RandomPedalboardDelay
+      sample_rate: ${sample_rate}
+      min_delay_seconds: 0.1
+      max_delay_sconds: 1.0
+      min_feedback: 0.05
+      max_feedback: 0.6
+      min_mix: 0.0
+      max_mix: 0.7