feat: Add challenge id, reward xp increment, goal increment member variables

Author: ByteAurora

src/main/kotlin/com/github/ilovegamecoding/intellijcodexp/model/CodeXPChallenge.kt

@@ -1,13 +1,19 @@
 package com.github.ilovegamecoding.intellijcodexp.model
 
 import com.github.ilovegamecoding.intellijcodexp.services.CodeXPService
+import java.util.*
 
 /**
  * CodeXPChallenge class
  *
  * CodeXPChallenge is a class that represents a challenge. Challenges are used to track the progress of the user.
  */
 class CodeXPChallenge() {
+    /**
+     * ID of challenge.
+     */
+    var id: String = ""
+
     /**
      * Event of challenge.
      */
@@ -28,6 +34,11 @@ class CodeXPChallenge() {
      */
     var rewardXP: Long = 0L
 
+    /**
+     * Increment of reward XP of challenge when completed.
+     */
+    var rewardXPIncrement: Long = 0L
+
     /**
      * Current progress of challenge.
      */
@@ -38,6 +49,11 @@ class CodeXPChallenge() {
      */
     var goal: Long = 0L
 
+    /**
+     * Increment of goal of challenge.
+     */
+    var goalIncrement: Long = 0L
+
     /**
      * Constructor for CodeXPChallenge with all parameters.
      */
@@ -46,14 +62,19 @@ class CodeXPChallenge() {
         name: String,
         description: String,
         rewardXP: Long,
+        rewardXPIncrement: Long,
         progress: Long,
-        goal: Long
+        goal: Long,
+        goalIncrement: Long
     ) : this() {
+        this.id = UUID.randomUUID().toString()
         this.event = event
         this.name = name
         this.description = description
         this.rewardXP = rewardXP
+        this.rewardXPIncrement = rewardXPIncrement
         this.progress = progress
         this.goal = goal
+        this.goalIncrement = goalIncrement
     }
 }