simplify "sen type" / "prc type" --> "type" in YAML files

demos/processor_imu.yaml

-processor type: "IMU"              # This must match the KEY used in the SensorFactory. Otherwise it is an error.
+type: "IMU"              # This must match the KEY used in the SensorFactory. Otherwise it is an error.
+
 unmeasured perturbation std: 0.00001
 time tolerance: 0.0025         # Time tolerance for joining KFs
 keyframe vote:

demos/processor_imu_no_vote.yaml

-processor type: "IMU"              # This must match the KEY used in the SensorFactory. Otherwise it is an error.
+type: "IMU"              # This must match the KEY used in the SensorFactory. Otherwise it is an error.
+
 time tolerance: 0.0025         # Time tolerance for joining KFs
 unmeasured perturbation std: 0.00001
 keyframe vote:

demos/sensor_imu.yaml

-sensor type: "IMU"             # This must match the KEY used in the SensorFactory. Otherwise it is an error.
+type: "IMU"             # This must match the KEY used in the SensorFactory. Otherwise it is an error.
+
 motion variances: 
     a_noise:                0.053     # standard deviation of Acceleration noise (same for all the axis) in m/s2
     w_noise:                0.0011    # standard deviation of Gyroscope noise (same for all the axis) in rad/sec

src/yaml/processor_IMU_yaml.cpp

@@ -24,7 +24,7 @@ static ProcessorParamsBasePtr createProcessorIMUParams(const std::string & _file
 {
     YAML::Node config = YAML::LoadFile(_filename_dot_yaml);
 
-    if (config["processor type"].as<std::string>() == "IMU")
+    if (config["type"].as<std::string>() == "IMU")
     {
         YAML::Node kf_vote = config["keyframe vote"];
 

src/yaml/sensor_IMU_yaml.cpp

@@ -25,7 +25,7 @@ static IntrinsicsBasePtr createIntrinsicsIMU(const std::string & _filename_dot_y
 {
     YAML::Node config = YAML::LoadFile(_filename_dot_yaml);
 
-    if (config["sensor type"].as<std::string>() == "IMU")
+    if (config["type"].as<std::string>() == "IMU")
     {
         YAML::Node variances        = config["motion variances"];
         YAML::Node kf_vote          = config["keyframe vote"];