1. 1. Summary

• Add parameter and return type annotations to all 10 functions in `utils/_init_.py` (`open_or_use_stdout`, `default_if_none`, `is_windows`, `is_string_list`, `load_yaml_file`, `dump_yaml_file`, `dump_yaml`, `load_yaml`, `get_task_name_without_suffix`, `pick_catalog_shard_node`)
• Add type annotations to all 3 functions in `utils/registry.py` (`suffix`, `make_registry_metaclass`, `Registry._new_`)
• Part of an incremental effort to add type hints across resmoke Python code

1. 1. Test plan

• [x] All modified files pass `python -m py_compile`
• [ ] Verify resmoke `core` suite still passes with these changes

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