Reapply "Add a Programming Language:: Zig classifier."

This reverts commit 3d0f1e8.

Author: whitequark

make_wheels.py

@@ -285,8 +285,7 @@ def dummy(): """Dummy function for an entrypoint. Zig is executed as a side effe
             ('Classifier', 'Topic :: Software Development :: Compilers'),
             ('Classifier', 'Topic :: Software Development :: Code Generators'),
             ('Classifier', 'Topic :: Software Development :: Build Tools'),
-            ('Classifier', 'Programming Language :: Other'),
-            ('Classifier', 'Programming Language :: Other Scripting Engines'),
+            ('Classifier', 'Programming Language :: Zig'),
             ('Project-URL', 'Homepage, https://ziglang.org'),
             ('Project-URL', 'Source Code, https://github.com/ziglang/zig-pypi'),
             ('Project-URL', 'Bug Tracker, https://github.com/ziglang/zig-pypi/issues'),