Initial version of combining rtsp_ai_player and camera modules.

Functionality has been written to rtsp_ai_player.

TODO!!
- move functionality of camera module misc/rtsp_ai_player/aienginegimbalserver.cpp
- implement all signals in AiEngineGimbalClient
- get drone position from autopilot and send it to AiEngineGimbalServer

misc/rtsp_ai_player/aienginedefinitions.h

@@ -0,0 +1,50 @@
+#pragma once
+
+// Common geoposition
+typedef struct {
+    float lat;
+    float lon;
+    float alt;
+} AiEngineGeoPosition;
+
+
+// AiEngineGimbalClient -> AiEngineGimbalServer is sent when location or position of the drone changes.
+typedef struct {
+    AiEngineGeoPosition position;
+    float pitch;
+    float yaw;
+} AiEngineDronePosition;
+
+
+typedef struct {
+    int left;
+    int top;
+    int right;
+    int bottom;
+} AiEngineRectangle;
+
+
+// AiEngineGimbalClient -> AiEngineGimbalServer when AI finds the target. Index is a new variable to
+// keep track of the targets.
+typedef struct {
+    int index;
+    AiEngineRectangle rectangle;
+} AiEngineCameraTarget;
+
+
+// AiEngineGimbalServer -> AiEngineGimbalClient when AiEngineGimbalServer has zoomed to the target
+// defined in AiEngineCameraTarget. Position variable contains calculated geoposition of the target.
+typedef struct {
+    int targetIndex;
+    AiEngineGeoPosition position;
+} AiEngineTargetPosition;
+
+
+// AiEngineGimbalClient -> AiEngineGimbalServer when AI asks to change camera direction. For example
+// nothing interesting was not found. AiEngineGimbalServer -> AiEngineGimbalClient every few second so
+// that AI knows the position of the camera.
+typedef struct {
+    float yaw;
+    float pitch;
+    float zoom;
+} AiEngineCameraPosition;