No bsb output color

First I want to start by saying thanks for the great project and great contribution to Reason gamedev community. Thank you a lot! 🎂🎉🙌

I'm playing with different "bootstraps" and build systems around reprocessing and right now I'm trying your approach because I've felt in love with `create-react-app` in React world. I noticed that `bsb` output does not have colors. I had PR to `bsb-loader` that was fixing the same issue. It should be as easy as changing `bsb` command depending on platform. It should work without problem on macOS and Linux. Here is original PR I've done: https://github.com/reasonml-community/bs-loader/pull/29. It would be great to know what do you thing about it and if it's easy to implement.

先檢視 bsb 命令的呼叫方式，並將其與所參照的 bs-loader pull request #29 進行比較。驗證該命令在 macOS 和 Linux 上的平台特定行為，然後確認 bsb 的輸出包含色彩，同時不會破壞現有的建置流程。

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