Enable coroutines.

demo-launcher/build.gradle.kts

@@ -6,13 +6,17 @@ plugins {
 
 dependencies {
     implementation(kotlin("stdlib"))
+    implementation(kotlin("reflect"))
     implementation(project(":demo-domain"))
     implementation(project(":demo-application"))
     implementation(project(":demo-infrastructure"))
     implementation(project(":demo-exposition"))
     implementation("org.springframework.boot:spring-boot-starter-web")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-reactor")
+    implementation("org.springframework.boot:spring-boot-starter-webflux")
 }
 
 springBoot {
     mainClass = "com.example.demo.launcher.ApplicationLauncherKt"
-}
+}