v2.12.0-alpha.1

👀 New:

• ✏ API v3: remove ALL Go code from the API repository. Now, API contains only the RR protobuf API. You don't need to import an interface from the API (it's not a Go way) now. You may declare the interface where you use it (have a look at this PR for more info).
• ✏ SDK v3: refactor all packages, merge worker + sync worker (since there were no differences), pool + sync pool - now, if a user uses supervisor, pool automatically turns on supervisor under the hood.

🩹 Fixes:

• 🐛 http plugin: correctly set permissions for the uploads (multipart-form files), BUG, (thanks @egonbraun)

🔧 Maintenance:

• 🔧 All plugins update to the v3. They don't use API interfaces anymore.