Mongoid users should be able to configure FLE setting in mongoid.yml and/or config.rb files.

• All the driver's FLE option should be configurable in Mongoid - https://www.mongodb.com/docs/ruby-driver/master/reference/client-side-encryption/#auto-encryption-options
• It should be possible to use generated schema map (MONGOID-5585) or load a custom schema map from a json file.
• It should be possible to have different setups for different environment; this includes an option to completely skip encryption in some enviromnets (i.e. dev)