Introduce event dispatcher and fix heartbeat, auth reply events

bl-model/build.gradle.kts

@@ -0,0 +1,28 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+plugins {
+    kotlin("multiplatform")
+    kotlin("plugin.serialization")
+}
+
+kotlin {
+    explicitApi()
+
+    linuxX64()
+    linuxArm64()
+    macosArm64()
+    mingwX64()
+    jvm { compilerOptions.jvmTarget = JvmTarget.JVM_11 }
+
+    sourceSets {
+        commonMain.dependencies {
+            api(project(":bl-codec"))
+            api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.11.0")
+        }
+
+        commonTest.dependencies {
+            implementation(kotlin("test"))
+            implementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.11.0")
+        }
+    }
+}