Backport docs for six assemblies

### Describe the issue or suggestion

System.Resources.Extensions:

- [ ] System.Resources.Extensions.DeserializingResourceReader
- [ ] System.Resources.Extensions.PreserializedResourceWriter

System.Resources.Writer:

- [ ] System.Resources.IResourceWriter (interface)
- [ ] System.Resources.ResourceWriter (class)

System.Xml.XPath.XDocument:

- [ ] System.Xml.XPath.Extensions
- [ ] System.Xml.XPath.XDocumentExtensions

System.Net.NameResolution

- [ ] System.Net.Dns:
- [ ] System.Net.IPHostEntry

System.Security.Cryptography.ProtectedData:

- [ ] System.Security.Cryptography.DataProtectionScope (enum)
- [ ] System.Security.Cryptography.ProtectedData (static class)

System.IO.Compression.ZipFile:

- [ ] System.IO.Compression.ZipFile (static class)
- [ ] System.IO.Compression.ZipFileExtensions (static class)