Add various reifications and new utilities.

[poteat]

[0.25.0]

• Reify NaturalNumber.Modulo and NaturalNumber.ModuloBy to value-level functions.
• Reify Number.Negate to a value-level function.
• Reify List.Zip.
• Add Integer.Negate.
• Add List.Sort and List.SortBy.
• Reify String.StartsWith and String.EndsWith to value-level functions.
• Add Object.PickByValue.
• Reify Type.Display to an identity function.
• Improve pipe performance.
• Reify List.Intersect.
• Add List.Subtract and List.SubtractBy.
• Add Kind.ApplyKind.
• Reify List.Unshift, List.FlatMap, and List.Times.
• Add String.Compare and String.CompareChar.
• Add List.Compare for comparing lists.
• Reify Number.Compare to a value-level function.
• Add Type.TypeOf as a kind for emulating the typeof operator.
• Add List.UniqueBy for getting unique values from a list and mapping.
• Reify Number.IsInteger to a value-level function.
• Add String.Repeat for repeating a string.
• Add List.CartesianProduct for generating all possible combinations of elements.
• Fix edge condition in String.Join involving empty values.