Expand "workspace/willRenameFiles" support to include folders.

- Allow folder renames to trigger workspace/willRenameFiles since the
  language server can update source files during such an operation

Signed-off-by: Roland Grunberg <[email protected]>

Author: rgrunber

org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/handlers/InitHandler.java

@@ -220,9 +220,14 @@ public void registerCapabilities(InitializeResult initializeResult) {
 
 		if (preferenceManager.getClientPreferences().isWorkspaceWillRenameFilesSupported()) {
 			FileOperationsServerCapabilities wsFileOperations = new FileOperationsServerCapabilities();
-			FileOperationPattern fileOpPattern = new FileOperationPattern("**/*.java");
-			fileOpPattern.setMatches(FileOperationPatternKind.File);
-			wsFileOperations.setWillRename(new FileOperationOptions(List.of(new FileOperationFilter(fileOpPattern, "file"))));
+			FileOperationPattern fileOpPatternJava = new FileOperationPattern("**/*.java");
+			fileOpPatternJava.setMatches(FileOperationPatternKind.File);
+			FileOperationPattern fileOpPatternPackage = new FileOperationPattern("**");
+			fileOpPatternPackage.setMatches(FileOperationPatternKind.Folder);
+			wsFileOperations.setWillRename(new FileOperationOptions(List.of(
+				new FileOperationFilter(fileOpPatternJava, "file"),
+				new FileOperationFilter(fileOpPatternPackage, "file")
+			)));
 			wsCapabilities.setFileOperations(wsFileOperations);
 		}