Bug 277278 - Support autoboxing on change-value

During debugging, if the user provides a primitive value, but the variable type is a boxed type
convert the value automatically.

Change-Id: I618dfe3d0b320eed4de903e64cf51ce38d312efb
Reviewed-on: https://git.eclipse.org/r/c/jdt/eclipse.jdt.debug/+/187291
Tested-by: JDT Bot <jdt-bot@eclipse.org>
Tested-by: Sarika Sinha <sarika.sinha@in.ibm.com>
Reviewed-by: Sarika Sinha <sarika.sinha@in.ibm.com>