Fixing migration missing field

app/src/main/java/net/pokeranalytics/android/model/migrations/PokerAnalyticsMigration.kt

@@ -41,6 +41,7 @@ class PokerAnalyticsMigration : RealmMigration {
 				it.renameField("filterElements", "filterConditions")
 			}
 			schema.get("SessionSet")?.let {
+				it.addField("id", String::class.java).setRequired("id", true)
 				it.addPrimaryKey("id")
 			}
 			currentVersion++