add increment to Edit UI and Habit

uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/models/Habit.kt

@@ -39,7 +39,8 @@ data class Habit(
     val computedEntries: EntryList,
     val originalEntries: EntryList,
     val scores: ScoreList,
-    val streaks: StreakList
+    val streaks: StreakList,
+    var increment: Double = 0.0
 ) {
     init {
         if (uuid == null) this.uuid = UUID.randomUUID().toString().replace("-", "")
@@ -119,6 +120,7 @@ data class Habit(
         this.type = other.type
         this.unit = other.unit
         this.uuid = other.uuid
+        this.increment = other.increment
     }
 
     override fun equals(other: Any?): Boolean {