Move `option_env!` and `env!` tests to the `env-macro` directory This PR moves the `option_env!` tests to there own directory (`extoption_env`), matching the naming convention used by the tests for `env!` (which live in the `extenv` directory).
Move `option_env!` and `env!` tests to the `env-macro` directory This PR moves the `option_env!` tests to there own directory (`extoption_env`), matching the naming convention used by the tests for `env!` (which live in the `extenv` directory).