Add Codespaces Page - #296

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Collection expressions targeting non mutable interface type 'System.Collections.Generic.IEnumerable<GitHubExtension.DeveloperIds.IDeveloperId>' do not have a defined concrete type, and are not supported for trimming and AOT compatibility with WinRT scenarios (consider changing the target type to be a concrete type, a mutable interface type, or add an explicit cast for either of these on the collection expression, eg. '(string[])["A", "B", "C"]') (https://github.com/microsoft/CsWinRT/tree/master/src/Authoring/WinRT.SourceGenerator/AnalyzerReleases.Shipped.md)

Collection expressions targeting non mutable interface type 'System.Collections.Generic.IReadOnlyList<Octokit.Codespace>' do not have a defined concrete type, and are not supported for trimming and AOT compatibility with WinRT scenarios (consider changing the target type to be a concrete type, a mutable interface type, or add an explicit cast for either of these on the collection expression, eg. '(string[])["A", "B", "C"]') (https://github.com/microsoft/CsWinRT/tree/master/src/Authoring/WinRT.SourceGenerator/AnalyzerReleases.Shipped.md)

Collection expressions targeting non mutable interface type 'System.Collections.Generic.IEnumerable<GitHubExtension.DeveloperIds.IDeveloperId>' do not have a defined concrete type, and are not supported for trimming and AOT compatibility with WinRT scenarios (consider changing the target type to be a concrete type, a mutable interface type, or add an explicit cast for either of these on the collection expression, eg. '(string[])["A", "B", "C"]') (https://github.com/microsoft/CsWinRT/tree/master/src/Authoring/WinRT.SourceGenerator/AnalyzerReleases.Shipped.md)