Dependencies created via DynamicDeps are not counted in stats

[kmike]

It seems DynamicDeps is counted as a single dependency; what's inside doesn't appear in stats. We should count these dependencies in stats as well.

It's a question if they need to add to the same stat as current poet/injector stats, or if they should go with another prefix.
For me it sounds better to use the same prefix, because there shouldn't be a difference between using DynamicDeps and hardcoding a dependency as a callback argument.