Add google-drive-maven-plugin.uploadedFiles property to current MavenPro...

...ject and export GoogleDrive metadata for uploaded files

The feature allows access to Google Drive metadata for files from other plugins. For example, in Velocity template one could write

#set( $uploadedFiles = $project.getProperties().get("google-drive-maven-plugin.uploadedFiles").entrySet() )
#foreach( $e in $uploadedFiles )
$e.getKey(): $e.getValue().getWebContentLink()
#end

and place download link in the text.