Ability to set camera_server positional info, zoom factor and fov

protos/camera_server/camera_server.proto

@@ -125,6 +125,18 @@ service CameraServerService {
 
     // Respond to an incoming tracking off command.
     rpc RespondTrackingOffCommand(RespondTrackingOffCommandRequest) returns(RespondTrackingOffCommandResponse) { option (mavsdk.options.async_type) = SYNC; }
+
+    // Set the camera's GPS position.
+    rpc SetPosition(SetPositionRequest) returns(SetPositionResponse) { option (mavsdk.options.async_type) = SYNC; }
+
+    // Set the camera's attitude quaternion.
+    rpc SetAttitudeQuaternion(SetAttitudeQuaternionRequest) returns(SetAttitudeQuaternionResponse) { option (mavsdk.options.async_type) = SYNC; }
+
+    // Set the camera's zoom factor for CAMERA_FOV_STATUS reporting.
+    rpc SetZoomFactor(SetZoomFactorRequest) returns(SetZoomFactorResponse) { option (mavsdk.options.async_type) = SYNC; }
+
+    // Set the field of view explicitly, for cameras that do not report a zoom factor.
+    rpc SetFieldOfView(SetFieldOfViewRequest) returns(SetFieldOfViewResponse) { option (mavsdk.options.async_type) = SYNC; }
 }
 
 
@@ -520,6 +532,35 @@ message RespondTrackingOffCommandResponse {
     CameraServerResult camera_server_result = 1; // The result of sending the response.
 }
 
+message SetPositionRequest {
+    Position position = 1; // The camera's current GPS position
+}
+message SetPositionResponse {
+    CameraServerResult camera_server_result = 1;
+}
+
+message SetAttitudeQuaternionRequest {
+    Quaternion attitude_quaternion = 1; // The camera's current attitude
+}
+message SetAttitudeQuaternionResponse {
+    CameraServerResult camera_server_result = 1;
+}
+
+message SetZoomFactorRequest {
+    float zoom_factor = 1; // The camera's current zoom factor, starting at 1x.
+}
+message SetZoomFactorResponse {
+    CameraServerResult camera_server_result = 1;
+}
+
+message SetFieldOfViewRequest {
+    float horizontal_fov_deg = 1; // The camera's current horizontal field of view in degrees
+    float vertical_fov_deg = 2; // The camera's current vertical field of view in degrees
+}
+message SetFieldOfViewResponse {
+    CameraServerResult camera_server_result = 1;
+}
+
 // Point description type
 message TrackPoint {
     float point_x = 1; // Point to track x value (normalized 0..1, 0 is left, 1 is right).