Byondapi is not implemented

[ike709]

Doc (can't hyperlink it): https://www.byond.com/docs/ref/#/{{appendix}}/Byondapi

Prior (WIP) attempt: https://github.com/OpenDreamProject/OpenDream/pull/1775

SS13 has various example DLLs that utilize byondapi that I can dig up if they'd be helpful.