Add a flag to skip the service-component file check in packaging-plugin

This allows to disable the selectively based on property values.

tycho-packaging-plugin/src/main/java/org/eclipse/tycho/packaging/PackagePluginMojo.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2008, 2022 Sonatype Inc. and others.
+ * Copyright (c) 2008, 2024 Sonatype Inc. and others.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
@@ -155,6 +155,13 @@ public class PackagePluginMojo extends AbstractTychoPackagingMojo {
 	@Parameter(defaultValue = "true")
 	private boolean deriveHeaderFromSource;
 
+	/**
+	 * If {@code true}, it is checked that the explicitly declared OSGi service
+	 * component files exist.
+	 */
+	@Parameter(defaultValue = "true")
+	private boolean checkServiceComponentFilesExist = true;
+
 	@Component
 	private SourceReferenceComputer soureReferenceComputer;
 
@@ -259,7 +266,7 @@ private File createPluginJar() throws MojoExecutionException {
 			checkBinIncludesExist(buildProperties, binIncludesIgnoredForValidation.toArray(new String[0]));
 			// 4. check DS files exits...
 			TychoProject facet = getTychoProjectFacet();
-			if (facet instanceof OsgiBundleProject bundleProject) {
+			if (checkServiceComponentFilesExist && facet instanceof OsgiBundleProject bundleProject) {
 				String components = bundleProject.getManifestValue("Service-Component", project);
 				if (components != null) {
 					if (components.contains("*")) {