BAEL-3723: Add missing code - SecurityWebApplicationInitializer (#8492)

spring-security-modules/spring-security-rest/src/main/java/org/baeldung/security/SecurityWebApplicationInitializer.java

@@ -0,0 +1,10 @@
+package org.baeldung.security;
+
+import org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer;
+
+public class SecurityWebApplicationInitializer extends AbstractSecurityWebApplicationInitializer {
+
+    public SecurityWebApplicationInitializer() {
+        super(SecurityJavaConfig.class);
+    }
+}