[Maven] Use zip format for products
<!-- Because the target platform's artifact metadata doesn't contain the pgp keys but the repository's artifact metadata does -->
<!-- See https://www.eclipse.org/tycho/sitedocs/tycho-p2/tycho-p2-director-plugin/materialize-products-mojo.html#source -->
<source>targetPlatform</source>
+ <formats>
+ <linux>zip</linux>
+ <macosx>zip</macosx>
+ <win32>zip</win32>
+ </formats>
</configuration>
</plugin>
