Move `Copilot.Compile.Bluespec.External` out of `shared` directory. Refs #36.#38

RyanGlScott merged 3 commits intomasterCopilot-Language/copilot-bluespec:masterfrom

T36-move-shared-to-srcCopilot-Language/copilot-bluespec:T36-move-shared-to-srcCopy head branch name to clipboard