Migrate Jakarta REST to the jakartaee org in Github

Per the 2021 Jakarta EE Program Plan we'd like to move the Jakarta REST repo into the jakartaee org in Github. See also:

• https://www.eclipse.org/lists/messaging-dev/msg00028.html
• https://github.com/eclipse-ee4j/jaxrs-api/issues/1086

Here is the exact repo that needs to be moved

from: https://github.com/eclipse-ee4j/jaxrs-api/ to: https://github.com/jakartaee/rest