Added a custom hitbox data class

src/main/java/noppes/npcs/controllers/data/CustomHitboxData.java

@@ -0,0 +1,51 @@
+package noppes.npcs.controllers.data;
+
+import net.minecraft.nbt.NBTTagCompound;
+
+public class CustomHitboxData {
+    private float width = 1f;
+    private float height = 1.8f;
+
+    private boolean customHitbox = false;
+
+    public NBTTagCompound writeToNBT(NBTTagCompound nbttagcompound) {
+        nbttagcompound.setBoolean("CustomHitbox", customHitbox);
+        if(customHitbox) {
+            nbttagcompound.setFloat("HitboxWidth", width);
+            nbttagcompound.setFloat("HitboxHeight", height);
+        }
+        return nbttagcompound;
+    }
+
+    public void readFromNBT(NBTTagCompound nbttagcompound) {
+        customHitbox = nbttagcompound.getBoolean("CustomHitbox");
+        if(customHitbox) {
+            width = nbttagcompound.getFloat("HitboxWidth");
+            height = nbttagcompound.getFloat("HitboxHeight");
+        }
+    }
+
+    public float getWidth() {
+        return width;
+    }
+
+    public void setWidth(float width) {
+        this.width = width;
+    }
+
+    public float getHeight() {
+        return height;
+    }
+
+    public void setHeight(float height) {
+        this.height = height;
+    }
+
+    public boolean isCustomHitbox() {
+        return customHitbox;
+    }
+
+    public void setCustomHitbox(boolean customHitbox) {
+        this.customHitbox = customHitbox;
+    }
+}