Add missing aliases to grd2xyz

[willschlitzer]

This is a follow up to #1284 and wraps additional parameters.

Reminders

• Run make format and make check to make sure the code follows the style guide.
• Add tests for new features or tests that would have caught the bug that you're fixing.
• Add new public functions/methods/classes to doc/api/index.rst.
• Write detailed docstrings for all functions/methods.
• If adding new functionality, add an example to docstrings or tutorials.

Slash Commands

You can write slash commands (/command) in the first line of a comment to perform
specific operations. Supported slash commands are:

• /format: automatically format and lint the code
• /test-gmt-dev: run full tests on the latest GMT development version

[maxrjones]

binary is already used as the name of a common option. Please select a different alias for Z and add b="binary".

[willschlitzer]

Updated to z_convention and added b

[weiji14]

Just a few more common aliases to add, otherwise all good!