Add Keys and Float64Values messages (#273)

Author: saikishor

control_msgs/CMakeLists.txt

@@ -26,6 +26,8 @@ set(msg_files
   msg/HardwareDiagnostics.msg
   msg/HardwareStatus.msg
   msg/InterfaceValue.msg
+  msg/Keys.msg
+  msg/Float64Values.msg
   msg/JointComponentTolerance.msg
   msg/JointControllerState.msg
   msg/JointJog.msg

control_msgs/msg/Float64Values.msg

@@ -0,0 +1,13 @@
+std_msgs/Header header
+
+# List of values corresponding to the interfaces or joints defined in Keys.msg
+# The size and order must match that of Keys.msg
+# Each value corresponds to the key at the same index in Keys.msg
+#
+# For example. if Keys.msg has keys = ["joint1/position", "joint2/velocity"], then
+# InterfacesValues.msg could have values = [1.57, 0.0]. The first value (1.57) corresponds to "joint1/position"
+# and the second value (0.0) corresponds to "joint2/velocity"
+#
+# This message is used by the interfaces_state_broadcaster to publish the values of the interfaces via
+# ROS 2 topics ~/names (Keys.msg) and ~/values (InterfacesValues.msg)
+float64[] values

control_msgs/msg/Keys.msg

@@ -0,0 +1,5 @@
+std_msgs/Header header
+
+# List of names defining interfaces or joints or other string-based entities
+# being published with Keys.msg
+string[] keys