GH-645 Add Kotlin Web example

spring-cloud-function-samples/function-sample-kotlin-web/src/main/kotlin/com/example/kotlin/DemoKotlinApplication.kt

@@ -0,0 +1,16 @@
+package com.example.kotlin
+
+import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.boot.runApplication
+import org.springframework.context.annotation.Bean
+import java.util.function.Function
+import org.springframework.cloud.function.context.FunctionCatalog
+import kotlin.jvm.internal.Reflection
+import kotlin.jvm.javaClass
+
+@SpringBootApplication
+open class DemoKotlinApplication 
+
+fun main(args: Array<String>) {
+	runApplication<DemoKotlinApplication>(*args)
+}

spring-cloud-function-samples/function-sample-kotlin-web/src/main/kotlin/com/example/kotlin/DemoKotlinConfiguration.kt

@@ -0,0 +1,18 @@
+package com.example.kotlin
+
+import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.boot.runApplication
+import org.springframework.context.annotation.Bean
+import java.util.function.Function
+import org.springframework.context.annotation.Configuration
+
+@Configuration
+class DemoKotlinConfiguration {
+	@Bean
+	fun uppercase(): (String) -> String {
+		return { it.toUpperCase() }
+	}
+}
+
+
+