[WIP] Pimple, Interfaces

- [ ] Gather feedback about what do to with \Pimple.

- [ ] move all the examples and 'Simple*' classes into a 'example' folder.

- [ ] Gather feedback about the objective of the `ObjectLoaderFactory`.

- [ ] Improve CS.



I ~~didn't~~ change so much, I added an Abstract Repository, ~~a simple Associator for class->worker, and few Interfaces~~

- IdentityMapSynchronizerInterface

- ObjectRepositoryInterface

- ~~IdentityExtractorFactoryInterface~~

- ~~ObjectLoaderFactoryInterface~~

- ~~ObjectRepositoryFactoryInterface~~

~~let me know what do you think, thanks to the interfaces I created a stupid orm.~~