Add support for importing multiple URLs in CSV

[kddjenejfkffksd]

Summary

Add support for importing multiple URLs to KP2A_URL in csv.

Examples

When importing from Bitwarden, let there be a way to import to something like
URL: https://www.mathworks.com/
KP2A_URL: https://www.google.com/
KP2A_URL_1: https://www.naver.com/

Instead of
URL: https://www.mathworks.com/,https://www.google.com/,https://www.naver.com/

Context

Bitwarden supports multiple urls and can export them to csv. Although KeePassXC supports multiple URLs by adding entry attributes with KP2A_URL, it seems KeePassXC does not import them as multiple URLs.

(Btw, having multiple urls support under browser integration while having one url slot on the main entry panel seems counter-intuitive. Just saying.)

[droidmonkey]

The only feature of the program that uses multiple urls is the browser integration. Unlikely we'll support this in the CSV parser, it is pretty feature rich and complex as is.

[michaelk83]

The only feature of the program that uses multiple urls is the browser integration.

IMO this is more about import not dropping data and not mangling data too much (like placing stuff in the wrong fields or combining multiple fields into one), so that it would be easier for people to migrate. Less clean-up after an import. I suppose this will be affected by #863.

Also, I think I saw some similar request before, but I can't find it.

[droidmonkey]

We will not support expanding the CSV importer to additional attributes. You will have to move those in manually after the initial import. This feature is just not feasible for CSV since each attribute will require it's own column and a way to match that column to something in the UI. Another option is to add multiple url's to the notes, do the import, then copy the url's into the browser settings.