add subscription request

interfaces/SimpleScene/SimpleScene.proto

@@ -56,3 +56,29 @@ message IposSimpleOrientation {
   float z = 3; // there is no orientation
   float w = 4; // available
 }
+
+message IposSubscriptionRequest {
+
+  string subscription_id = 1;
+
+  Selection type_selection = 2;
+  repeated string types = 3;
+
+  Selection object_selection = 4;
+  repeated string objects = 5;
+
+  Selection zone_selection = 6;
+  repeated string zones = 7;
+
+  double minimum_position_delta = 8;
+  double max_update_frequency = 9;
+
+}
+
+enum Selection {
+  SELECTION_UNSPECIFIED = 0;
+  SELECTION_ALL = 1;
+  SELECTION_NONE = 2;
+  SELECTION_ONLY_LIST = 3;
+  SELECTION_EXCEPT_LIST = 4;
+}
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