[Feature]: Import paper(s)

[Merseleo]

To which use case does your feature request relate?

No response

Is your feature request related to a problem? Please describe

At the moment, the only way to add new paper manually, is to input all paper details manually (see #41) which can be exhaustive if you want to input the whole start set.

Describe the solution you'd like

Maybe you also created the start set of papers, e. g. in JabRef oder an Excel sheet. So it would helpful to import papers in different formats (such as ,csv oder .bib).

Describe alternatives you've considered

Alternatively, you could start searching for the paper in the internet (or internal database), if you start inputting the paper details and autocomplete the remaining details.

Anything else?

No response