Add missing Spring Controller templates for Kotlin and Scala

Fixes: #5817

devtools/platform-descriptor-json/src/main/resources/templates/basic-rest/kotlin/spring-controller-template.ftl

@@ -0,0 +1,15 @@
+package ${package_name};
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.PathVariable;
+
+
+@RestController
+@RequestMapping("${path}")
+class ${class_name} {
+
+    @GetMapping
+    fun hello() = "hello"
+}

devtools/platform-descriptor-json/src/main/resources/templates/basic-rest/scala/spring-controller-template.ftl

@@ -0,0 +1,12 @@
+package ${package_name};
+
+import org.springframework.web.bind.annotation.{GetMapping, RequestMapping, RestController, PathVariable};
+
+
+@RestController
+@RequestMapping(Array[String]("${path}"))
+class ${class_name} {
+
+    @GetMapping
+    def hello() = "hello"
+}