Add compatibility test for stage operators (31 total)

[eerxuan]

core operator stages - - addFields
core operator stages - - bucket
core operator stages - - collStats
core operator stages - - count
core operator stages - - geoNear
core operator stages - - group
core operator stages - - indexStats
core operator stages - - limit
core operator stages - - listClusterCatalog
core operator stages - - listSampledQueries
core operator stages - - lookup
core operator stages - - match
core operator stages - - merge
core operator stages - - out
core operator stages - - planCacheStats
core operator stages - - project
core operator stages - - querySettings
core operator stages - - queryStats
core operator stages - - rankFusion
core operator stages - - redact
core operator stages - - replaceRoot
core operator stages - - replaceWith
core operator stages - - sample
core operator stages - - search
core operator stages - - searchMeta
core operator stages - - set
core operator stages - - skip
core operator stages - - sort
core operator stages - - unset
core operator stages - - unwind
core operator stages - - vectorSearch