[Feature Request] Add support for LogCallback in ApplicationOptions

[bgavrilMS]

            var options = new ConfidentialClientApplicationOptions
            {
                ClientId = TestConstants.ClientId,
                LogLevel = LogLevel.Verbose,
                EnablePiiLogging = true,
                IsDefaultPlatformLoggingEnabled = true,
                LogCallback = (level, msg, pii) => { log(msg); }  // Not Available!

            };

            var cca = ConfidentialClientApplicationBuilder.CreateWithApplicationOptions(options)
                .Build();