fix: added check to check if package.json contains output

[zZHorizonZz]

Describe your changes

This PR adds a check to ensure that if package.json doesn't contain an output field, we don't get a null pointer exception, but instead, get an appropriate warning.

Error in question:

[error]: Build step io.quarkiverse.quinoa.deployment.QuinoaProcessor#prepareQuinoaDirectory threw an exception: java.lang.NullPointerException: Cannot invoke "jakarta.json.JsonString.getString()" because the return value of "org.eclipse.parsson.JsonObjectBuilderImpl$JsonObjectImpl.getJsonString(String)" is null
[ERROR] 	at org.eclipse.parsson.JsonObjectBuilderImpl$JsonObjectImpl.getString(JsonObjectBuilderImpl.java:249)
[ERROR] 	at io.quarkiverse.quinoa.deployment.framework.override.NextFramework.override(NextFramework.java:34)
[ERROR] 	at io.quarkiverse.quinoa.deployment.framework.FrameworkType.overrideConfig(FrameworkType.java:91)
[ERROR] 	at io.quarkiverse.quinoa.deployment.QuinoaProcessor.prepareQuinoaDirectory(QuinoaProcessor.java:109)
[ERROR] 	at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:733)
[ERROR] 	at io.quarkus.deployment.ExtensionLoader$3.execute(ExtensionLoader.java:856)
[ERROR] 	at io.quarkus.builder.BuildContext.run(BuildContext.java:256)
[ERROR] 	at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18)
[ERROR] 	at org.jboss.threads.EnhancedQueueExecutor$Task.doRunWith(EnhancedQueueExecutor.java:2516)
[ERROR] 	at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2495)
[ERROR] 	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1521)
[ERROR] 	at java.base/java.lang.Thread.run(Thread.java:1570)
[ERROR] 	at org.jboss.threads.JBossThread.run(JBossThread.java:483)

Check List (Check all the applicable boxes)

• My code follows the code style of this project.
• My change requires changes to the documentation.
• I have updated the documentation accordingly.
• All new and existing tests passed.

[ia3andy]

Thanks!!!

[melloware]

@all-contributors add @zZHorizonZz for code,bug

[allcontributors]

@melloware

I've put up a pull request to add @zZHorizonZz! 🎉