Created @Interpolate annotation for Interpolators to know which fields to interpolate (instead of all public fields)

src/main/java/eu/crushedpixel/replaymod/holders/TimestampValue.java

@@ -1,5 +1,6 @@
 package eu.crushedpixel.replaymod.holders;
 
+import eu.crushedpixel.replaymod.interpolation.Interpolate;
 import eu.crushedpixel.replaymod.interpolation.KeyframeValue;
 import lombok.AllArgsConstructor;
 import lombok.NoArgsConstructor;
@@ -8,6 +9,7 @@ import lombok.NoArgsConstructor;
 @NoArgsConstructor
 public class TimestampValue extends KeyframeValue {
 
+    @Interpolate
     public double value;
 
 }