Implement a prompt to launch test one by one

[anouvel]

With something like :

./42ShellTester --prompt

Will run one test, and prompt the user before running the next one, such as :

run test 1... 
<output of test>
V

run next test (yn) > y

run test 2...
<output of test>
... 

It should be usefull to check the logger between each tests.