add sort-options to the search-inside API

[waldenn]

Describe the problem that you'd like solved

The search-inside API currently has no way to sort the results, which is possible in the search API.

Note: sorting is also not yet possible in the search-inside web interface:

• https://openlibrary.org/search?q=water&mode=ebooks&has_fulltext=true

Proposal & Constraints

I would like to see some basic sort-options for the inside-search API (and ideally also the web interface).

The most important options (in my opinion):

• sort by number of matches (the current default perhaps?).
• sort by relevance: which would also take into account title-matches etc. (besides the number of matches within an item), like this is done for the search API.

Other "nice to have" options would be:

• new (newest first)
• old (oldest first)
• author asc
• auther desc
• title asc
• title desc
• month/week views asc
• month/week views desc

[Priyanshujha11]

assign this to me