[Feature Request] Support fields that combine both latitude and location values.

[abdullahdevrel]

In some instances, the location value may be combined in a single column. For example, here the loc column contains the value 44.3500,26.7833.

I am not exactly sure how to configure this inside Datasette. If the feature is not approved, I believe I have to split the loc column into separate latitude and longitude columns before opening it up using Datasette. Let me know what you think. Thanks!