Add C# bridges and coordinator service

- geviscope-bridge: GeViScope SDK REST wrapper (:7720)
- gcore-bridge: G-Core SDK REST wrapper (:7721)
- geviserver-bridge: GeViServer REST wrapper (:7710)
- copilot-coordinator: WebSocket coordination hub (:8090)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

copilot-coordinator/Models/Sequence.cs

@@ -0,0 +1,21 @@
+namespace CopilotCoordinator.Models;
+
+public record SequenceDefinition(
+    int Id,
+    string Name,
+    int CategoryId,
+    List<int> Cameras,
+    int IntervalSeconds
+);
+
+public record SequenceCategory(int Id, string Name);
+
+public record RunningSequence(
+    int ViewerId,
+    int SequenceId,
+    DateTime StartedAt,
+    int CurrentCameraIndex
+);
+
+public record SequenceStartRequest(int ViewerId, int SequenceId);
+public record SequenceStopRequest(int ViewerId);