Test environment creation

Environment setup to run tests locally

In the root of hub repository there's a tests.sh provided as a tool to help write some tests.

./tests.sh                                                                                                                          16:56
Usage:
    ./tests.sh -h|--help                        Display this help message.
    ./tests.sh -i                               Init tests : prepare env tests
    ./tests.sh -g <CONFIG_PATH/name.yaml>       Generate new test by specifying target config (parser|scenario|postoverflow)
    ./tests.sh --all                            Run all tests
    ./tests.sh --single <MYPATH/config.yaml>    Run single test

To write a new test on a pristine repository:

./tests.sh -i
./tests.sh -g <path to the item configuration yaml>

The -i call will fetch the hub-tests repositories and build the necessary tooling, while -g will create the needed .tests directory.