6.03.00042 Mode 9/10 and BunkerSiloManager changes (#6849)

    - reworked shield height control
    - fixes reverse unloading mode 6 in bunker silo (#6748)
    - code improvements BunkerSiloManager
    - improves unloading mode 9 at trailers
    - fixes mode 9 heap callstacks
    - #6447

modDesc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8" standalone="no" ?>
 <modDesc descVersion="47">
-	<version>6.03.00041</version>
+	<version>6.03.00042</version>
 	<author><![CDATA[Courseplay.devTeam]]></author>
 	<title><!-- en=English de=German fr=French es=Spanish ru=Russian pl=Polish it=Italian br=Brazilian-Portuguese cs=Chinese(Simplified) ct=Chinese(Traditional) cz=Czech nl=Netherlands hu=Hungary jp=Japanese kr=Korean pt=Portuguese ro=Romanian tr=Turkish -->
 		<en>CoursePlay SIX</en>