Simplify Logging policy

[samvaity]

Major updates

• HttpLogDetailLevel enum made internal to HttpLogOptions
• Removed pretty print functionality, can be achieved with directly with Binary Data
• Removed applicationId deprecated methods from HttpLogOptions
• Removed HttpResponseLoggingContext and HttpRequestLoggingContext in favor of context data and logger info from HttpRequest
• Moved LogLevel enum and LoggingEventBuilder internal to ClientLogger