Types and type aliases not included in documentation output

[yonkeltron]

It seems that pdoc3 output doesn't include types or type aliases declared in a module. For example, none of the following seem to be listed even if used by code:

type CsvProcOptions = dict[str, bool]
type CsvRowCount = Annotated[int, "Number of CSV rows handled"]

Since I highly doubt that simply changing the value of TYPE_CHECKING would magically make types appear in documentation output, this issue seems like a feature request and disjoint from #460.

Can we make this sort of thing show up in doc output?