Compatibility with `run_macro_file`

[mitranim]

Since "Chain of Command" overlaps in functionality with run_macro_file, I occasionally find myself converting macros to "chain" hotkeys. You can't just copy-paste the macro commands into the "command" argument because the format is different: macro commands are dicts, whereas "chain" commands are lists.

I think it would be better if CoC accepted the macro command format. For backwards compatibility, we can detect and support both the list and the dict formats.

Thoughts?