Chore: Add Automatic-Module-Name to JAR manifest (#864)

Author: tanya732

build.gradle

@@ -49,6 +49,12 @@ java {
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
+jar {
+  manifest {
+    attributes 'Automatic-Module-Name': 'com.auth0.java'
+  }
+}
+
 tasks.withType(Javadoc) {
   failOnError false
   options.addStringOption('Xdoclint:none', '-quiet')