Add the Module Composer Support with dependency management.

[sroutier]

As suggested by @sraffali in #56,

Add the Module Composer Support :
Check the cafeinated doc this will introduce two important functions:

Module dependency requirements on our new modules => you can split big functionality in smaller independent modules while requiring that the other be installed to run the whole thing.
Package dependency required by the module itself and not by the rest, so the composer.json doesn't get cluttered by all those packages that belong to a module.

This work may require upgrading the entire package lesk-module to a more recent version of the original caffeinated/modules.