Add logging for target platform filter operations

[Copilot]

Target platform filters currently operate silently, making it difficult to verify filter configurations or debug why certain units are excluded from the build.

Changes

Enhanced TargetPlatformFilterEvaluator.FilterLogger:

• Track and log individual filtered units (limited to first 10 to avoid log spam)
• Log INFO when filters match no units
• Log INFO when units are filtered, showing unit IDs and versions
• Preserve existing WARN when all matching units are removed

Extended filter logging to REMOVE_ALL filters:

• Previously only RESTRICT filters had any logging
• Now both filter types provide visibility into their operations

Example Output

[INFO] Removed 2 unit(s) matching {type=OSGI_BUNDLE, id="org.eclipse.osgi"}: org.eclipse.osgi_3.15.0, org.eclipse.osgi_3.16.0

[INFO] Filter {type=OSGI_BUNDLE, id="non.existent.bundle"} did not match any units

[INFO] Removed 15 unit(s) matching {type=OSGI_BUNDLE, id="org.apache.commons"}: commons-lang_2.0.0, commons-lang_2.1.0, ..., commons-lang_2.8.0, ... and 5 more

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• testng.org
  • Triggering command: /opt/hostedtoolcache/CodeQL/2.23.1/x64/codeql/tools/linux64/java/bin/java -jar /opt/hostedtoolcache/CodeQL/2.23.1/x64/codeql/xml/tools/xml-extractor.jar --fileList=/home/REDACTED/work/tycho/.codeql-scratch/dbs/java/working/files-to-index15831785581795953666.list --sourceArchiveDir=/home/REDACTED/work/tycho/.codeql-scratch/dbs/java/src --outputDir=/home/REDACTED/work/tycho/.codeql-scratch/dbs/java/trap/java (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Print filtered units

We have an option to filter units, and it is often not trivial to see it actually work as intended (see documentation here https://tycho.eclipseprojects.io/doc/latest/target-platform-configuration/target-platform-configuration-mojo.html#filters )

It would be good to enhance the Filtering to log an info message:

• if filters are defined but nothing matched
• if something matched what was actually filtered out

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