Add tests for DCS Serializing System Types

[shmao]

#21433 made changes to many System types and changed they way they're serialized. We'd like to check whether we have tests covering DCS serializing those types. If not, we should add new tests. Here's the list of the types.

dotnet/corefx#20247 added tests for BinaryFormatter serializing the types.

• System.Boolean
• System.Byte
• System.Char
• System.Collections.Generic.LongEnumEqualityComparer`1[[System.Runtime.Serialization.Formatters.Tests.UInt64Enum]]
• System.Collections.Generic.EnumEqualityComparer`1[[System.Runtime.Serialization.Formatters.Tests.UInt32Enum]]
• System.Collections.Generic.SByteEnumEqualityComparer`1[[System.Runtime.Serialization.Formatters.Tests.SByteEnum]]
• System.Collections.Generic.ShortEnumEqualityComparer`1[[System.Runtime.Serialization.Formatters.Tests.Int16Enum]]
• System.Collections.Generic.SortedList`2[[System.Int32],[System.Runtime.Serialization.Formatters.Tests.Point]]
• System.Collections.ObjectModel.ObservableCollection`1[[System.Int32]] // The implementations between core and netfx are completely different. I don't think serialization works here without a custom serialization routine
• System.Collections.ObjectModel.ReadOnlyDictionary`2[[System.Int32],[System.String]]
• System.Collections.ObjectModel.ReadOnlyObservableCollection`1[[System.Int32]]
• System.Collections.Specialized.ListDictionary
• System.Collections.Specialized.StringCollection
• System.ComponentModel.BindingList`1[[System.Runtime.Serialization.Formatters.Tests.Point]]
• System.Data.SqlTypes.SqlBoolean
• System.Data.SqlTypes.SqlByte
• System.Data.SqlTypes.SqlDateTime
• System.Data.SqlTypes.SqlDouble
• System.Data.SqlTypes.SqlInt16
• System.Data.SqlTypes.SqlInt32
• System.Data.SqlTypes.SqlInt64
• System.Data.SqlTypes.SqlString
• System.Double
• System.Drawing.Point
• System.Drawing.PointF
• System.Drawing.Rectangle
• System.Drawing.RectangleF
• System.Drawing.Size
• System.Drawing.SizeF
• System.Globalization.CompareInfo
• System.Globalization.SortVersion
• System.Int16
• System.Int32
• System.Int64
• System.Lazy`1[[System.Int32]]
• System.Net.Cookie
• System.Net.CookieCollection // I expect issues here as netfx and core are using different types in serialized fields
• System.Net.CookieContainer
• System.SByte
• System.Single
• System.UInt16
• System.UInt32
• System.UInt64