Pitest config allows only whole Test class execution, but it would be good to have option to run single test method from class

[Kevin222004]

Pitest currently only allows the whole Test class execution, but it would be good to have the option to run a single test method from the class.

For example:-
In the checkstyle project, multiple profiles are created, so sometimes, the Internal class requires only a single test case to kill the mutation from a different profile. Now there is no feature available that can help to run only a single test from the file we have to execute all the tests from the file. so as a result a test from a single file will run twice in both the profiles. where as we required only one test case to run.

we have faced this issue while working at checkstyle/checkstyle#13810