restructure things a bit for use in actual gameplay

src/main/kotlin/com/pobnellion/aoe/entity/goals/EntityWorkTarget.kt

@@ -0,0 +1,10 @@
+package com.pobnellion.aoe.entity.goals
+
+interface EntityWorkTarget {
+    var currentProgressPercent: Float
+    fun isComplete(): Boolean
+    fun addProgress(amount: Float)
+    fun setProgress(amount: Float)
+    fun removeProgress(amount: Float)
+    fun onComplete()
+}