Parse page ranges following citeproc

[DerDrodt]

This PR depends on typst/citationberg#7.

Allows for page-range field to have multiple ranges, as in 1-4 & 7-12, 13, 14\-19.

Each of these is split into parts:

• Commas as ,
• Ampersands like &
• Single pages like 13
• Escaped ranges like 14\-19, where the hyphen will not be replaced by the given separator
• Ranges like 1-4

Ranges are given to citationberg to format depending on the format rule per the CSL spec.