Add xlmap file for new motor module

This is used of the pseudo device in the motor module, creating the
monitor

bam/templates/motorProxy.xlmap

+<?xml version="1.0" ?>
+<logicalNameMap>
+    <redirectedRegister name="Dummy">
+        <targetDevice><par>target</par></targetDevice>
+        <targetRegister><par>monitorRegister</par></targetRegister>
+        <plugin name="forceReadOnly" />
+    </redirectedRegister>
+</logicalNameMap>