add support for simple (non-Flux) types

add objectToStringHttpMessageConverter

CompilerController accepts parameterized types

spring-cloud-function-compiler/pom.xml

@@ -41,6 +41,11 @@
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-context</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-function-core</artifactId>
+			<version>${project.version}</version>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>