[crac] RFR: Convert CRaC tests from shell scripts to Java [v4]

[Anton Kozlov]

On Fri, 10 Mar 2023 14:42:25 GMT, Radim Vansa <duke at openjdk.org> wrote:

>> Right now this is a draft as it builds on top of https://github.com/openjdk/crac/pull/47
>> 
>> Please see `CracTest` javadoc for detailed info.
>
> Radim Vansa has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Address review comments

LGTM. Thank you a lot!

-------------

Marked as reviewed by akozlov (Lead).

PR: https://git.openjdk.org/crac/pull/50