Update Voice Android SDK to 6.3.0

[ramapal]

6.3.0

API Updates

• Provides a LoggerInterface interface. This interface contains a log method that is invoked with a LogParameters object every time a log message becomes available. The LogParameters object contains all the information relevant to the log message being delivered.
• The Android SDK internally implements the LoggerInterface to provide default logging capabilities to stdout using android.util.Log.
• Provides a Voice.SetLogger(LoggerInterface) method that allows setting a custom logger that conforms to LoggerInterface to which log messages will be delivered.
• Provides a Voice.GetLogger() method that returns the logger that was previously set with setLogger. If no custom logger was set, this method returns the default logger currently used by the SDK.
• Users can send their messages to be logged by the SDK using Voice.GetLogger().log(LogParameters). This logs the message using the SDK's default logger.
• Users can also implement custom loggers that conform to LoggerInterface to customize the logging mechanism, for eg., logging to a file, sending the logs to a server, etc.
• The existing Logger class is deprecated and will be removed in the next major version release.

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