Give a better structure to the file

yaml/demo_visual_odometry_euroc.yaml

@@ -82,20 +82,23 @@ config:
       topic: "/debug_image"
       package: "wolf_ros_vision"
       period: 0.25
-      show_tracks_ID: true
-      show_landmarks_ID: false
-      min_luminosity: 200
-      max_luminosity: 400
-      thickness_curr_ftr: -1
-      size_feature_curr_pix: 3
-      thickness_kfs_ftr: 0.1
-      size_feature_kfs_pix: 3
-      thickness_lmk: 5
-      size_text_ID: 0.5
-      thickness_track: 1.5
-      size_text_ID: 0.75
-      color_tracks_features: "RED"
-      color_landmarks: "BLUE"
-      color_last_keypoints: "GREEN"
-      color_tracks_features_preprocess: "YELLOW"
+      tracks:
+        show_id: true
+        size_id: 0.5
+        thickness: 1.5
+        color: "CYAN"
+        min_lum: 100
+        max_lum: 450
+        feature_last:
+          thickness: -1
+          size_pix: 2
+          color: "RED"
+        feature_kfs:
+          thickness: 0.1
+          size_pix: 1
+      landmarks:
+        show_id: false
+        size_id: 0.5
+        size_pix: 5
+        color: "GREY"