feat: IsNilOrEmpty method

[jay-babu]

This is a common utility in many other languages like kotlin. I think it would be nice to have as part of this library. Currently I think you would have to do something like lo.FromPtr(request.Params.Status) != "" to handle it for a string.

[Amirali-Amirifar]

Not really well-defined for generic T, "empty" means different things per type. Most Go libs solve this with an IsZeroer interface instead:

type IsZeroer interface {
	IsZero() bool
}