add early logic of net computing on value setting

app/src/main/java/net/pokeranalytics/android/model/realm/Result.kt

@@ -16,21 +16,42 @@ open class Result : RealmObject() {
 
     // The buyin amount
     var buyin: Double? = null
+        set(value) {
+            field = value
+            this.computeNet()
+        }
 
     // the cashed out amount
     var cashout: Double? = null
+        set(value) {
+            field = value
+            this.computeNet()
+        }
 
     // The net result
     var netResult: Double? = null
+        set(value) {
+            field = value
+            this.computeNet()
+        }
 
     // The net (readonly)
     var net: Double? = null
 
     // The transactions associated with the Result, impacting the result
     var transactions: RealmList<Transaction> = RealmList()
+        set(value) {
+            field = value
+            this.computeNet()
+        }
 
     // The tournament final position, if applicable
     var tournamentFinalPosition: Int? = null
 
+    // Computes the Net
+    fun computeNet() {
+//        this.net = ...
+    }
+
     // @todo tips?
 }