Introduce Railway Oriented Programming (ROP) to RD Domain (Part 1)

Issue: Remote Development Railway Oriented Programming... (#416985 - closed)

What does this MR do and why?

Introduce Railway Oriented Programming (ROP) to Remote Dev Domain Logic layer - Part 1: Introduce Result class and supporting code, and refactor Workspace Update to RoP, add README.

See Introduce Railway Oriented Programming (ROP) to... (&10956 - closed) for details.

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