Add support for a LocalFileClient

[jorgecoca]

As a developer, I'd like to have a client that can save logs to a local file

[winwisely99]

@jorgecoca @erickjtorres
Can i suggest using Hive.
https://pub.dev/packages/hive
Works on Web, Desktop and Mobile as it has no native dependencies and very fast

[jorgecoca]

I think this might a different type of support, since it is local storage. What I was thinking when I said a LocalFile it would be like a JSON file in the filesystem of the OS, so if a customer wants to share those logs with someone, they would share that file.

[mrverdant13]

Doesn't the file_lumberdash plugin already covers this use case?
If so, this issue might be closed.