Adds in sample nested JSON files to ensure app still works nicely with these files in future

Author: Warren Buckley

LogViewer.Server.Tests/another-nested-log-file.json

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+{"@t":"2019-12-10T13:33:23.0970926Z","@mt":"An unknown error occurred","@l":"Error","@x":"Exception stack trace","SourceContext":"MySourceContext","Scope":["FirstScope",1850562557,"198441851"],"MachineName":"MY-MACHINE","EnvironmentUserName":"WORKGROUP\\SYSTEM","ExceptionDetail":{"HResult":-2146233087,"Message":"Internal Error","Source":"System.ServiceModel","Action":null,"Code":{"IsPredefinedFault":true,"IsSenderFault":true,"IsReceiverFault":false,"Namespace":"http://schemas.xmlsoap.org/soap/envelope/","Name":"Client","SubCode":null},"Reason":{"Translations":[{"XmlLang":"","Text":"Internal Error"}]},"Type":"System.ServiceModel.FaultException"},"AssemblyVersion":"2.1.0.1017"}

LogViewer.Server.Tests/nesting-log-file.json

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+{"@t":"2022-08-19T09:52:14.4033115Z","@mt":"Message","@l":"Error","OuterLogClass":{"OuterText":"Text","LogClassArray":[{"FalseBool":false,"ZeroInt":0,"Null":null,"String":"Text","StringArray":["One","Two"],"$type":"LogTestInner"},{"FalseBool":false,"ZeroInt":0,"Null":null,"String":"Text","StringArray":["One","Two"],"$type":"LogTestInner"}],"$type":"LogTestOuter"},"LogClass":{"FalseBool":false,"ZeroInt":0,"Null":null,"String":"Text","StringArray":["One","Two"],"$type":"LogTestInner"},"EmptyString":"","null":null,"FalseBool":false,"ZeroInt":0}