feat(api): bind encrypted workspaces to accounts and devices

server/src/WebDrop.Core/Enums.cs

@@ -34,6 +34,7 @@ public enum FrameFlags : byte
     Snapshot = 2,
     Gated = 4,
     Enc = 8,
+    Control = 16,
 }
 
 public enum LogKind : byte