add gradle groovy shell plugin to the project
add gradle groovy shell plugin to the project

algra/pact-jvm,algra/pact-jvm,DiUS/pact-jvm,Fitzoh/pact-jvm,Fitzoh/pact-jvm,flaregames/pact-jvm,DiUS/pact-jvm,olga-vasylchenko/pact-jvm