v1.16: Add `sort` param to `/documents`

[guimachiavelli]

v1.16 adds a new sort parameter to the /documents route. Behaviour and syntax are the same /search sort.

Tasks

• Update /documents reference

References

• SME: @Mubelotix
• PRD: https://www.notion.so/meilisearch/Usage-for-sort-on-documents-2234b06b651f8033992cc9c92d796fed
• Engine issue: Allow sorting on the /documents route meilisearch#5722