feat: Addedd ReadOnlySpan, Refactor to class, improve XML docs #774

Job	Run time
all / Version Management / Detect Version	32s
all / Commit Linter / Commitlint	16s
all / Code Formatting / Validate Code Formatting	39s
all / Run Tests / Testing .NET solution	9m 49s
all / Build Solution / Build .NET solution	9m 21s
	20m 37s

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