Allow orientation for user composite.

PiperOrigin-RevId: 740909723
Change-Id: I3b7dff4c2104501ca0fa0517755b8dd5b665d71a

Author: quagla

dm_control/mjcf/schema.xml

@@ -1217,6 +1217,7 @@
             <attribute name="type" type="keyword" valid_values="particle grid cable rope loop cloth" required="true"/>
             <attribute name="count" type="array" array_type="int" array_size="3"/>
             <attribute name="offset" type="array" array_type="float" array_size="3"/>
+            <attribute name="quat" type="array" array_type="float" array_size="4"/>
             <attribute name="vertex" type="string"/>
             <attribute name="initial" type="string"/>
             <attribute name="curve" type="string"/>
@@ -1584,6 +1585,7 @@
                 <attribute name="type" type="keyword" valid_values="particle grid cable rope loop cloth" required="true"/>
                 <attribute name="count" type="array" array_type="int" array_size="3"/>
                 <attribute name="offset" type="array" array_type="float" array_size="3"/>
+                <attribute name="quat" type="array" array_type="float" array_size="4"/>
                 <attribute name="vertex" type="string"/>
                 <attribute name="initial" type="string"/>
                 <attribute name="curve" type="string"/>