Task: Upgraded the dgs graphql to submodules and parent modules for extends projects

dgs-graphql/src/main/kotlin/com/cubetiqs/graphql/demo/GraphqlDemoApplication.kt

@@ -0,0 +1,11 @@
+package com.cubetiqs.graphql.demo
+
+import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.boot.runApplication
+
+@SpringBootApplication
+class GraphqlDemoApplication
+
+fun main(args: Array<String>) {
+    runApplication<GraphqlDemoApplication>(*args)
+}