Add DoctrineTools module code
Moving factories to DoctrineModule service map as of doctrine/DoctrineModule#226
Allowing usage of `Doctrine\ORM\EntityManager` service with the new factory logic
Refactored CLI initialization out of `onBootstrap`
Moving event attaching to `init`
Cleaning up definitions of the CLI services
Moving migrations to the new abstract service factory, adding alias for ORM
Fixing CS checks
CS fixes/missing docblocks fixes
Minor CS fixes
Merge pull request #211 from doctrine/feature/cli-tools-rebased

cli tools and 0.8 preparation