NSLog has a 1024 character limit, and anything beyond is truncated with <...>. This PR aims to split longer logs into multiple NSLog calls when necessary.

This is already possible on Android by setting the maxLogcatObjectSize boolean under the android key in the config.

The goal is to add a similar config option for iOS as well.

Todos:

• make the max length configurable
• add the new config to the type definitions
• check if we need to use ~1000 or if we can bump the max length to 1024 or 1023 before it actually truncates...

closes NativeScript/NativeScript#8657