Ref T9456. Some rough edges and we can't complete the build yet since I haven't written a webhook, but this mostly seems to be working.
- Maniphest Tasks
- T9456: Evaluate upstream support for third-party build systems
- rPf82db7524b32: Add a "Build with CircleCI" build step
Restricted Diffusion Commit
- Ran this build on some stuff.
- Ran a normal HTTP step build to make sure I didn't break that.