feat(android): move Config to be per-instance rather than a singleton

[jcesarmobile]

equivalent of e964068 for Android

Used a JSONObject instead of a JSON formatted string (what iOS does) because JSONObject can be created from a JSON formatted string already, and can also put values in a simpler way than a JSON formatted string.

thoughts @carlpoole @dwieeb?

[imhoffd]

I don't know either, other than passing in config for every log method call 🤮

[carlpoole]

I think it would be messy if we had a logger instance also per Config instance so I'm thinking have shouldLog as a static global variable on Logger that can be set by doing something like

Logger.enabled(true)

and making it an all or nothing thing. I don't like the idea of tying the logger to the config when there is a possibility of having multiple configs. Or maybe just have it be enabled globally if at least one config asked for it.

[jcesarmobile]

I've passed the config to logger on bridge init and now it works.

I've noticed that there is a "Starting BridgeActivity" log that is always displayed since it's logged before the config is set, but was also happening with previous implementation.

[carlpoole]

Looks good!