[DOC] Adding pagination in Hybrid query

[martin-gaievski]

What do you want to do?

• Request a change to existing documentation
• Add new documentation
• Report a technical problem with the documentation
• Other

Tell us about your request.
Existing documentation page for hybrid query (https://opensearch.org/docs/latest/search-plugins/hybrid-search/) should be updated, the new addition should mention that hybrid query will support pagination (https://opensearch.org/docs/latest/search-plugins/searching-data/paginate/).
Describe the details of implementation of pagination for hybrid queries: concept of the page for hybrid query, how it's different from pagination for tradition queries, and how that size of the page is defined by the new parameter of the hybrid query: pagination_depth.

As development is ongoing we can give only draft of the request/response that are involved into this feature

Version:
Planned to be released in 2.19

What other resources are available?
Main GH issue with feature request: opensearch-project/neural-search#280
RFC: opensearch-project/neural-search#933
PR: opensearch-project/neural-search#963