[BAEL-3319] - Documenting a Spring REST API using OpenAPI (#7919)

* [BAEL-3211] Generate Integers within a range in Java

* [BAEL-3211] Generate Integers within a range in Java

* Moved files from java-numbers to java-numbers-2

* [BAEL-3319] - Documenting a Spring REST API using OpenAPI

* [BAEL-3319] Added a new module for springdoc-openapi library

* Incorporated feedback - indents, GetMapping et al annotations, package as jar, remove README & spring-webflux change, use of map in BookRepository

* Used DeleteMapping instead of RequestMapping

* Add the spring-boot-springdoc module to root pom.xml

* Remove plain spring boot starter from pom.xml

spring-boot-springdoc/src/test/java/com/baeldung/springdoc/SpringContextIntegrationTest.java

@@ -0,0 +1,17 @@
+package com.baeldung.springdoc;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class SpringContextIntegrationTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    
+    }
+
+}