Add suse (zypper) package manager

Please include the following information if you're reporting an issue.

- Which operating system you're using.: openSUSE Tumbleweed
- Which Python version. 3.9.9
- Which exodus package version. : 2.0.4
- The command that you're running (please include the `--verbose` flag so that the stack trace is included).
- The full output of the command.

