Add Test Application

[yallen011]

NOTE: Implementation on this issue can be started only after Creating App Skeleton issue has been closed.

Add the test application as seen in nexmo-spring-boot-test-application but it should be written in java. The vonage-spring-boot-test-application folder and pom.xml file should already exist.

Also, make sure the pom.xml exists(It should be created in issue #2) The make sure all of the configurations exist from the corresponding nexmo spring boot starter pom file for the test application sub-module then modify the file as indicated below:

pom.xml Modifications

• Remove any Kotlin plugins or dependencies

• Make sure the <parent> property is under the <modelVersion> property and specifies the correct parent dependency

• artifact version should be 1.0.0

• Make sure the value in the <artifactId> and the ` property match