Type imports
Other modules may also define types that we wish to refer to. In this case we need to import them.
Like functions, types can be referred to in a qualified way by
putting the imported module name and a dot before the type name. For example,
bytes_builder.BytesBuilder
Types can also be imported in an unqualified way by listing them in
the import statement with the word type
before the type name.
Unlike functions, Gleam types are commonly imported in an unqualified way.