Support $min & $max aggregation operators in $project, $addFields, $set... aggregation stages.

[christophstrobl]

Starting with MongoDB 5.0 the $min and $max operators can be used in more than just the $group stage.

See documentation for full list:

• https://docs.mongodb.com/manual/reference/operator/aggregation/max/
• https://docs.mongodb.com/manual/reference/operator/aggregation/min/

[JamesMcNee]

Hi @christophstrobl I would like to have a stab at picking this up if that is ok? First time contributing but thinking it is reasonable enough.

Actually slightly confused on this one as it looks like min and max are already supported on $project, $addFields and $set 🤔.