Adds function [as_zone_result] that returns a zone result, without converting
error cases.

Changes the Inout plugin accordingly.

Valentin Perrelle authored 3 years ago and David Bühler committed 3 years ago

- loc is now optional and copied from statement if not given
- get_* functions are now exported

Comments the interface builtins.mli.

Unit tests are in the new file utils/unit_tests.ml, and are run by the new test
file tests/value/unit_tests.i through the exported function Eva.Unit_tests.test.