Add tendon actuator force limits and tendon actuator force sensor.

PiperOrigin-RevId: 745096883
Change-Id: I9d626e5d6de271d07f2f2662324b6bd03399977b

Author: thowell

dm_control/mjcf/schema.xml

@@ -387,7 +387,9 @@
           <attributes>
             <attribute name="group" type="int"/>
             <attribute name="limited" type="keyword" valid_values="false true auto"/>
+            <attribute name="actuatorfrclimited" type="keyword" valid_values="false true auto"/>
             <attribute name="range" type="array" array_type="float" array_size="2"/>
+            <attribute name="actuatorfrcrange" type="array" array_type="float" array_size="2"/>
             <attribute name="solreflimit" type="array" array_type="float" array_size="2"/>
             <attribute name="solimplimit" type="array" array_type="float" array_size="5"/>
             <attribute name="solreffriction" type="array" array_type="float" array_size="2"/>