devel/jaxb-api: Add new Port

Jakarta XML Binding API 2.3 provides the classic javax.xml.bind API for
mapping Java classes to XML representations. Although the Maven artifact
is named jakarta.xml.bind-api, version 2.3.3 still uses the
javax.xml.bind namespace.

This port installs only the JAXB API and does not include a JAXB runtime
implementation.

WWW: https://jakarta.ee/specifications/xml-binding/2.3/

Sponsored by: Netzkommune GmbH

Required for: FreeIPA server port