Added project for the Azure Table Storage sink
Adjusting AssemblyInfo.cs for consistency with the other sinks
Added the initial implementation of the AzureTableStorage sink along with a bunch of todos
Moved out the LogEventEntity to a separate file
Incorporated culture-specific formatting into MessageTemplateTextFormatter, rather than Logger and LogEvent.
Dropped setting of format provider on base string writer, to maintain consistency with other parts of the code.
Moved Azure sink to src directory
Generate xdoc in release mode for Azure Table Storage sink