Bug 577724 - [18] Add Execution Environment for JavaSE-18

Change-Id: I98bb441addfb3981db1861563cf345e60bfe35f8
Reviewed-on: https://git.eclipse.org/r/c/jdt/eclipse.jdt.debug/+/188707
Tested-by: Sarika Sinha <sarika.sinha@in.ibm.com>
Reviewed-by: Sarika Sinha <sarika.sinha@in.ibm.com>
7 files changed