ST6RI-682 Ordered menu items and added separator

Author: TheKorpos

org.omg.sysml.xtext.ui/plugin.xml

@@ -357,6 +357,15 @@
         locationURI="popup:org.eclipse.ui.popup.any?after=additions">
      <menu
            label="SysMLv2">
+        <command
+              commandId="org.omg.sysml.xtext.ui.GenerateLibraryIndex"
+              label="Generate Library Index"
+              style="push">
+        </command>
+        <separator
+              name="org.omg.sysml.xtext.ui.index.separator"
+              visible="true">
+        </separator>
         <command
               commandId="org.omg.sysml.xtext.ui.PullRepositoryProject"
               label="Pull Model from API"
@@ -373,11 +382,6 @@
               </iterate>
            </visibleWhen>
         </command>
-        <command
-              commandId="org.omg.sysml.xtext.ui.GenerateLibraryIndex"
-              label="Generate Library Index"
-              style="push">
-        </command>
         <visibleWhen
               checkEnabled="false">
            <and>