Add option to deploy one or more model containers from the package

[SubPointSupport]

It should be possible to deploy only selected models from the whole package.

MetaPack should provide model container ID, so that one or more ID would be provided at the deployment time and only selected models will be deployed.

Options with key "_metapack.model.id" it to be used.

[milleraa]

I think I can use it for some kind of uninstalling(hiding fields/lists/content types).

[SubPointSupport]

That's a great use case, thanks @milleraa

Originally, we need it avoid package mess. For instance, that way we would be able to package different versions of the jQuery library within one package (rather than having a package per jQuery version). Later on, we would be able to pick up the right container/model to deploy the right jQuery version from the package - 1.1/1.2/2.0 and so on.

Again, right now we've for DefinitelyPacked.jQuery package with three versions of jQuery within and don't have any ability to pick up the right one - all three SPMeta2 models get deployed every time.