Added constructor to Position which takes a BlockPos

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

@@ -5,6 +5,7 @@ import eu.crushedpixel.replaymod.interpolation.KeyframeValue;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
+import net.minecraft.util.BlockPos;
 
 @Data
 @AllArgsConstructor
@@ -19,4 +20,10 @@ public class Position implements KeyframeValue {
         return new Position();
     }
 
+    public Position(BlockPos pos) {
+        this.x = pos.getX();
+        this.y = pos.getY();
+        this.z = pos.getZ();
+    }
+
 }