Add fesa device name as a comment to the scl file for BLOCK mode.

Closes #92 (closed)

For now implemented for BLOCK_MODE and only Siemens. DEVICE_MODE has different scl layout and I left it out for now. We could add it somewhere in the beginning of the block if needed.

silecs-codegen/src/xml/test/generated_correct/client/Beckhoff_BC9020.silecsparam

@@ -21,7 +21,7 @@
           <scalar format="dt"/>
       </Acquisition-Register>
       </Acquisition-Block>
-      <Instance label="SilecsHeader" address="0" DI-address="-1" DO-address="-1" AI-address="-1" AO-address="-1"/>
+      <Instance label="SilecsHeader" fesa-label="" address="0" DI-address="-1" DO-address="-1" AI-address="-1" AO-address="-1"/>
     </SILECS-Class>
     <SILECS-Class name="AllTypes" version="0.1.0" address="32816" DI-address="-1" DO-address="-1" AI-address="-1" AO-address="-1" used-mem="MW24..MW2113/2090 words" used-DI="0 word" used-DO="0 word" used-AI="0 word" used-AO="0 word">
       <Acquisition-Block name="MyROBlock" size="53" address="32816" mem-size="122">
@@ -284,8 +284,8 @@
                 <array2D dim1="2" dim2="2" format="dt"/>
             </Configuration-Register>
       </Configuration-Block>
-      <Instance label="testDevice1" address="0" DI-address="-1" DO-address="-1" AI-address="-1" AO-address="-1"/>
-      <Instance label="testDevice2" address="1" DI-address="-1" DO-address="-1" AI-address="-1" AO-address="-1"/>
+      <Instance label="testDevice1" fesa-label="" address="0" DI-address="-1" DO-address="-1" AI-address="-1" AO-address="-1"/>
+      <Instance label="testDevice2" fesa-label="" address="1" DI-address="-1" DO-address="-1" AI-address="-1" AO-address="-1"/>
     </SILECS-Class>
   </SILECS-Mapping>
 </SILECS-Param>