Go binding: Finish implementation of the List module

[michelchan]

Go binding: Finish implementation of the List module

Item	Detail
Binding	Go
Module	Morphir.SDK.List
Relevant Morphir.IR.SDK module	Morphir.IR.SDK.List
Relevant morphir-jvm code	morphir.sdk.List
Relevant Elm Module	List

Provide a Go lang implementation of the Morphir.SDK.List module for Morphir.SDK.

The implementation should include all the functionality for List as well as tests (we are willing to have this split across PRs).

Please place it here: https://github.com/finos/morphir/tree/features/polyglot-morphir/corelib/go/morphir/sdk/