Add GitHub actions workflow to compile

[ThreeDeeJay]

Follow-up on #68 (comment)
Now the Windows executables can be automatically released on every commit pushed and uploaded to a permanent location like this https://github.com/ThreeDeeJay/libiamf/releases/download/latest/iamfplayer.exe

[jwcullen]

@ThreeDeeJay,

Thank you for your submission. I apologize for the delay in responding to this PR.

Please see instructions for contributing to this repository in CONTRIBUTING.md. In order to accept your contribution we require that you sign the appropriate contributor agreement. Please comment on this PR after you have signed it.

Let me know if you have any questions.

[ThreeDeeJay]

Uhh, while I do get the need to make contributions legally sound, it also seems like unnecessary friction (signature, name and email seems a bit too personal) for a simple GitHub workflow based mostly on templates, my own edits and I think I copied this, so while I'm obviously offering this contribution for free and without any conditions or licenses (you could clean room code it as far as I'm concerned 😆), I'm not sure how much of this constitutes intellectual property that I'd need to get explicit permission for before signing anything legally binding, and even if I did, it seems there may be some legal mumbo jumbo preventing some projects like this other decoder from distributing their own binaries😕