Fixed GUI model classes missing sessionId and bootId

Author: flemming-n-larsen

gui-app/src/main/kotlin/dev/robocode/tankroyale/gui/model/BotInfo.kt

@@ -17,9 +17,8 @@ data class BotInfo(
     val initialPosition: InitialPosition? = null,
     val host: String, // bot directory name, when running locally
     val port: Int = -1,
-    val sessionId: String = "",
-    val bootId: Long? = null,
-
+    val sessionId: String? = null,
+    val bootId: Long? = null
 ) : Comparable<BotInfo> {
 
     val botAddress: BotAddress

gui-app/src/main/kotlin/dev/robocode/tankroyale/gui/model/BotState.kt

@@ -5,6 +5,8 @@ import kotlinx.serialization.Serializable
 @Serializable
 data class BotState(
     val id: Int,
+    val sessionId: String,
+    val bootId: Long? = null,
     val energy: Double,
     val x: Double,
     val y: Double,

gui-app/src/main/kotlin/dev/robocode/tankroyale/gui/model/Participant.kt

@@ -5,13 +5,15 @@ import kotlinx.serialization.Serializable
 @Serializable
 data class Participant(
     val id: Int,
+    val sessionId: String,
+    val bootId: Long? = null,
     val name: String,
     val version: String,
     val authors: List<String>,
     val description: String? = null,
     val homepage: String? = null,
     val countryCodes: List<String>,
-    val gameTypes: Set<String>? = HashSet(),
+    val gameTypes: Set<String> = HashSet(),
     val platform: String? = null,
     val programmingLang: String? = null,
     val initialPosition: InitialPosition? = null