Target platform icon for "Load TP" job

Register the typical target platform icon for the job family of the
"Loading target platform" job. That leads to the icon being shown next
to the progress bar of the progress view, similar to how the build has
its own icon and all egit, m2e etc. jobs have their own icon.

ui/org.eclipse.pde.core/src/org/eclipse/pde/core/target/LoadTargetDefinitionJob.java

@@ -185,4 +185,11 @@ private void resetPlatform(IProgressMonitor monitor) {
 		PDECore.getDefault().getFeatureModelManager().targetReloaded();
 	}
 
+	/**
+	 * @since 3.17
+	 */
+	public static Object getFamily() {
+		return JOB_FAMILY_ID;
+	}
+
 }

ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/PDEPlugin.java

@@ -26,6 +26,7 @@
 import org.eclipse.jface.dialogs.ErrorDialog;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.pde.core.target.LoadTargetDefinitionJob;
 import org.eclipse.pde.internal.core.PDEPreferencesManager;
 import org.eclipse.pde.internal.ui.launcher.PDELogFileProvider;
 import org.eclipse.pde.internal.ui.shared.target.RepositoryBundleContainerAdapterFactory;
@@ -42,6 +43,7 @@
 import org.eclipse.ui.internal.views.log.ILogFileProvider;
 import org.eclipse.ui.internal.views.log.LogFilesManager;
 import org.eclipse.ui.plugin.AbstractUIPlugin;
+import org.eclipse.ui.progress.IProgressService;
 import org.eclipse.ui.texteditor.IDocumentProvider;
 import org.osgi.framework.BundleContext;
 
@@ -214,6 +216,18 @@ public void start(BundleContext context) throws Exception {
 		LogFilesManager.addLogFileProvider(fLogFileProvider);
 
 		TargetStatus.initializeTargetStatus();
+		registerProgressIcon();
+	}
+
+	protected void registerProgressIcon() {
+		if (!PlatformUI.isWorkbenchRunning()) {
+			return;
+		}
+		IProgressService service = PlatformUI.getWorkbench().getProgressService();
+		if (service == null) {
+			return;
+		}
+		service.registerIconForFamily(PDEPluginImages.DESC_TARGET_DEFINITION, LoadTargetDefinitionJob.getFamily());
 	}
 
 	@Override