Deprecate redundant magics: %jars, %addMavenDependency

There are few magics that we inherited from IJava that seem redundant that we are going to deprecate (and, eventually, remove)

  • %jars - this seems to be a more restricted version of %classpath that only filter entries that are files, and skips directories. So it can be fully replaced by %classpath. So deprecation here will also internally route it to the %classpath magic
  • %addMavenDependency is an alias to %maven. No reason to support this longer alias.