Implement offset pagination for getRecordings

[jfederico]

Problem to solve:

When the number of recordings reaches a fair large number, getRecordings can be difficult to handle by BBB, SL and by the integrations. There have been some workarounds on the integration side, but the need of pagination has always been there.

There is a recent initiative of implementing offset pagination in BBB, SL should match that implementation

Purposed solution:

Implement offset pagination for getRecordings in the form:

getRecordings?limit=20&offset=100

For a quick ref see: https://nordicapis.com/everything-you-need-to-know-about-api-pagination/