Increase relevance of Import-Package quick-fix proposals

The proposals to add bundle requirements has a value of 16. Assign a
relevance of 20 to Import-Package proposals to show them higher up in
the list.

Author: HannesWell

ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/correction/java/QuickFixProcessor.java

@@ -274,7 +274,7 @@ public void addResolutionModification(IProject project, ExportPackageDescription
 				// same package
 				if (addedImportPackageResolutions.add(desc.getName())) {
 					var change = JavaResolutionFactory.createImportPackageChange(project, desc, cu, typeToImport);
-					result.add(JavaResolutionFactory.createJavaCompletionProposal(change, 4));
+					result.add(JavaResolutionFactory.createJavaCompletionProposal(change, 20));
 					isDone = true;
 				}
 			}