Add actlimited and actrange parameters to actuators of type "general".

PiperOrigin-RevId: 444830049
Change-Id: Ic9657ccdfd9ff70149942454b6bc716181f06011

Author: DeepMind

dm_control/mjcf/schema.xml

@@ -1439,8 +1439,10 @@
             <attribute name="group" type="int"/>
             <attribute name="ctrllimited" type="keyword" valid_values="false true"/>
             <attribute name="forcelimited" type="keyword" valid_values="false true"/>
+            <attribute name="actlimited" type="keyword" valid_values="false true"/>
             <attribute name="ctrlrange" type="array" array_type="float" array_size="2"/>
             <attribute name="forcerange" type="array" array_type="float" array_size="2"/>
+            <attribute name="actrange" type="array" array_type="float" array_size="2"/>
             <attribute name="lengthrange" type="array" array_type="float" array_size="2"/>
             <attribute name="gear" type="array" array_type="float" array_size="6"/>
             <attribute name="cranklength" type="float"/>