Allow the ExtensionMojoHelper to take into account dependency exclusions

It seems that the current ExtensionMojoHelper does not take into account dependency exclusions when building a XIP, see https://github.com/xwiki/xwiki-commons/blob/78fef1cb9cf41c074831129f9851cddb894f8e0e/xwiki-commons-tools/xwiki-commons-tool-extension-plugin/src/main/java/org/xwiki/tool/extension/util/ExtensionMojoHelper.java#L384

In practice, it means that when creating a XIP with dependencies that contain exclusions, those exclusions will be added into the XIP. If one of those excluded dependencies are not available, then the build will fail.