Platform Core Architecture

There should be an ongoing updated work towards a platform core architecture, like whether CDI shall replace other injection technologies, whether we want a common plug-in architecture (like simply using ServiceLoader or something like OSGi) and so on.

Start by reviewing the architecture questions in the issue: whether CDI should replace other injection technologies and whether a common plug-in architecture should use ServiceLoader or OSGi. The issue does not name files, tests, an entry point, or a defined completion condition, so the initial work would be clarifying the desired architecture and scope.

Written by the indexing model from the issue text.