Add `e`, `inf`, `nan`, `pi`, and `newaxis` to match the constants defined by both [NumPy](https://numpy.org/doc/stable/reference/constants.html) and the new [Array API](https://data-apis.org/array-api/latest/API_specification/constants.html). Note `newaxis` is not in the spec yet, but is being added in https://github.com/data-apis/array-api/pull/414