[Feature]: Add initial list of pages + search endpoint to /replay.json APIs

[ikreymer]

What change would you like to see?

To support large collection replay, the API responses for the replay.json endpoint should include:

• an initial list of pages, perhaps a pages (or initialPages?) endpoint, as well as total pages.
• the URL for the pagesQuery search/list endpoint, pointing to the endpoint added in Add collection page list/search endpoint #2354 that will allow for querying additional pages.

Context

ReplayWeb.page/wabac.js will use this additional data to quickly display an initial list of pages. It will then also use the pagesQuery endpoint to query for additional pages when searched.

We should do this for both crawls and collections since both may have large number of WACZ files.