Add chat to the campaign screen + change a bit the network UI.

shared/src/commonMain/kotlin/com/pixelized/shared/lwa/protocol/websocket/payload/RollMessage.kt

@@ -10,4 +10,13 @@ data class RollMessage(
     val rollDifficulty: String? = null,
     val rollValue: Int,
     val rollSuccessLimit: Int? = null,
-) : MessagePayload
+    val critical: Critical?,
+) : MessagePayload {
+    enum class Critical {
+        CRITICAL_SUCCESS,
+        SPECIAL_SUCCESS,
+        SUCCESS,
+        FAILURE,
+        CRITICAL_FAILURE
+    }
+}