cloudscribe VSIX template and nugets released for .NET 5.0

[CrispinF]

New Visual Studio template for .NET 5.0 published here https://marketplace.visualstudio.com/items?itemName=joeaudette.cloudscribeProjectTemplate

For guidance on using the template please see https://www.cloudscribe.com/introduction

NB there are some small breaking changes around corrected typos in config settings, described here cloudscribe/cloudscribe.templates#70
MultiTenant Options:
UserPerSiteThemes is now UsePerSiteThemes
UserPerSiteWwwRoot is now UsePerSiteWwwRoot
Content Template configuration:
AvailbleForFeature is now AvailableForFeature

If you would like to use the .NET Core 3.1 template, it can be downloaded here https://github.com/cloudscribe/cloudscribe.templates/blob/master/Archive/cloudscribeTemplate_NET31.vsix