Binary (0x05) data type for BSON to JSON conversion

- Describe the feature in as much detail as possible.

Here is list of supported data types for conversion from BSON to JSON
[data types](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a89a4a1834883de313280a85266ae292a.html)
Would it be possible to add (0x05) binary data type to covert to JSON as Base64 encoded string ?

Best Regards
Marek