added perform in WaitForIMU Startup and WaitForPressureStartup (#718)

Author: ayin21

bitbots_motion/bitbots_hcm/bitbots_hcm/hcm_dsd/actions/wait_for.py

@@ -6,7 +6,8 @@ class WaitForIMUStartup(AbstractHCMActionElement):
     Waits for the IMU to connect and does not complain as we are still in start up.
     """
 
-    pass
+    def perform(self, reevaluate=False):
+        pass
 
 
 class WaitForIMU(AbstractHCMActionElement):
@@ -25,7 +26,8 @@ class WaitForPressureStartup(AbstractHCMActionElement):
     Waits for the pressure sensors to connect and not complain since we are still starting up.
     """
 
-    pass
+    def perform(self, reevaluate=False):
+        pass
 
 
 class WaitForPressure(AbstractHCMActionElement):