Storage as JSON

[samducker]

Is your feature request related to a problem? Please describe.
I know Msgpacker is more efficient but I would like the ability to store as JSON for simplicity having individual json files within a collection.

Describe the solution you'd like
Config option to store as JSON instead of msg packer

Describe alternatives you've considered
Using the previous version

What this enables
It enables simplicity of being able to open your files directly and also it allows things like using bucket event notifications if each record is an individual json file instead of a collection being packed into one file.

[good-lly]

ok ... i will create a separate lowstorage class for which "fallback" to json instead of msgpack