Migration does not handle datetimeoffset

[krmr]

The current code unfortunately does not translate filter expressions with datetimeoffset eg. $filter=Date ge datetimeoffset'2020-09-09T00:00:00Z'. If sending this it is passed forward as a literal string and fails in the v4 endpoint as datetimeoffset is unknown.

The problem can be fixed by extending QueryNodeTranslator.Visit(Data.OData.Query.SemanticAst.ConstantNode nodeIn) for example like this:
{ v => v is DateTimeOffset, v => ((DateTimeOffset)nodeIn.Value).UtcDateTime.ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ssK", CultureInfo.InvariantCulture)

Since a number of classes for the tranlsations are internal it is not straightforward to use the package but override some methods.