Allow map options in validate/2 when schema is a list

[cheerfulstoic]

If I have the following:

NimbleOptions.validate(opts, NimbleOptions.new!(schema))

Everything works fine, but if I do:

NimbleOptions.validate(opts, schema)

It doesn't work 😢

[josevalim]

Can you please add a test as well? Thank you!

[cheerfulstoic]

Right, of course! Done!

I temporarily put in a if(is_map(options), do: IO.inspect(options)) in validate/2 to confirm that none of the tests were receiving a map as the first argument. I thought to make all of the tests use opts_to_type to exercise both the list and map versions of options, but I just went for a sanity test here assuming for now that if you pass in a map it will work everywhere the same as a list 🤷

[josevalim]

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