Bson model

[agcom]

Currently, the library is using models from the org.mongodb.bson. It's all fun and game until you need the flexibility.

The library design is source of most boiler plate codes. I would like to create a Kotlin implementation of bson model, based on Json model in Kotlinx serialization and inspired by org.mongodb.bson.

Examples of not enough flexibility (they are just source of boiler plate codes),

• BsonPrimitive subclass of BsonValue is not defined.
• BsonType is redundant when class type is self explanatory.
• BsonArray can extend BsonDocument