add ECF feature update site

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

Author: chrisrueger

org.bndtools.p2/bndtools.ecf.feature.bndrun

@@ -2,6 +2,8 @@ Bundle-Name:            Bndtools ECF Remote Services
 Bundle-Description:     ECF Remote Services integration for Bndtools
 Bundle-Category         bndtools
 Bundle-Copyright: Copyright Composent, Inc. others, 2025
+update: https://download.eclipse.org/rt/ecf/latest/site.p2/
+update.label: ECF Update Site
 
 Require-Capability \
     feature;name=org.eclipse.ecf.core.feature;version="[0.0.0,1000)",\