Based on #297

This PR changes the module defintions for all ModuleContainers:
Previously, the API was:

AppChain.from({
   modules: { SampleModule },
   config: { SampleModules: {} }
})

However, the config option was almost never used, being deprecated for quite a while already, and therefore ending up to be unnecessary boilerplate for the module configuration.

This PR removes these options and only allows a single record to be passed in, laying out the modules.
AppChain.from({ SampleModule })