add first tests

tests/00_start.php

tests/010_is_executable.php

tests/020_is_executable_in_tmp.php

tests/030_has_help.php

tests/110_set_metadata.php

tests/200_cert.php

tests/200_diskfree.php

tests/200_exec.php

tests/200_file.php

tests/200_simple.php

tests/configs/cert.ini

tests/configs/diskfree.ini

tests/configs/exec.ini

tests/configs/file.ini

tests/configs/hello.ini

tests/configs/metadata.ini