feature: Support for semicolon

[emilBeBri]

Did you check the docs?

• [X] I have read all the docs

Is your feature request related to a problem? Please describe.

So I often use data that has commas in them, making csv not that good. I'm not a big fan of tab-delimiters, either, and within my field (quantitative sociology), at least, semicolon has been used widely as the separator of choice. This is often used within 'csv' files, so it cannot be solved with a filetype.

Describe the solution you'd like

A way to notify the DataViewer command that it should use ';' as the separator.

Describe alternatives you've considered

Right now, I'm using tab as delimiter. This is ok when working alone, but when not the case, I need to transform the files in order to view them in the (amazing) dataviewer.

Additional context

No response