XML Minify support

Fixes redhat-developer/vscode-xml#609

Signed-off-by: azerr <azerr@redhat.com>

Author: angelozerr

org.eclipse.lemminx/src/main/java/org/eclipse/lemminx/extensions/minify/MinifyPlugin.java

@@ -0,0 +1,61 @@
+/*******************************************************************************
+* Copyright (c) 2026 Red Hat Inc. and others.
+* All rights reserved. This program and the accompanying materials
+* which accompanies this distribution, and is available at
+* http://www.eclipse.org/legal/epl-v20.html
+*
+* SPDX-License-Identifier: EPL-2.0
+*
+* Contributors:
+*     Red Hat Inc. - initial API and implementation
+*******************************************************************************/
+package org.eclipse.lemminx.extensions.minify;
+
+import org.eclipse.lemminx.extensions.minify.commands.MinifyDocumentCommand;
+import org.eclipse.lemminx.extensions.minify.participants.MinifyCodeActionParticipant;
+import org.eclipse.lemminx.services.IXMLDocumentProvider;
+import org.eclipse.lemminx.services.extensions.IXMLExtension;
+import org.eclipse.lemminx.services.extensions.XMLExtensionsRegistry;
+import org.eclipse.lemminx.services.extensions.commands.IXMLCommandService;
+import org.eclipse.lemminx.services.extensions.save.ISaveContext;
+import org.eclipse.lsp4j.InitializeParams;
+
+/**
+ * Minify plugin to register the minify command and code action.
+ */
+public class MinifyPlugin implements IXMLExtension {
+
+	private MinifyCodeActionParticipant codeActionParticipant;
+
+	@Override
+	public void start(InitializeParams params, XMLExtensionsRegistry registry) {
+		// Register minify command
+		IXMLCommandService commandService = registry.getCommandService();
+		if (commandService != null) {
+			IXMLDocumentProvider documentProvider = registry.getDocumentProvider();
+			commandService.registerCommand(MinifyDocumentCommand.COMMAND_ID,
+					new MinifyDocumentCommand(documentProvider));
+		}
+
+		// Register minify code action
+		codeActionParticipant = new MinifyCodeActionParticipant();
+		registry.registerCodeActionParticipant(codeActionParticipant);
+	}
+
+	@Override
+	public void stop(XMLExtensionsRegistry registry) {
+		// Unregister minify command
+		IXMLCommandService commandService = registry.getCommandService();
+		if (commandService != null) {
+			commandService.unregisterCommand(MinifyDocumentCommand.COMMAND_ID);
+		}
+
+		// Unregister minify code action
+		registry.unregisterCodeActionParticipant(codeActionParticipant);
+	}
+
+	@Override
+	public void doSave(ISaveContext context) {
+		// Nothing to do on save
+	}
+}