Add Qualifiers to DataSourceDefinition

[hantsy]

To align with CDI and Jakarta EE 11 Concurrency, add optional Qualifier classes to @DataSourceDefinition and allow developers to inject DataSource by @Inject.

As mentioned by @gavinking, also update the existing application/web/ejb-jar descriptors, add qualifer/scope to the XML elements.

[gavinking]

We should not do this without adding the same capability to the <data-source> element of application.xml, web.xml, etc.

[hantsy]

We should not do this without adding the same capability to the <data-source> element of application.xml, web.xml, etc.

Add a qualifier to all of these elements like what is done in the persistence.xml.