add: ecto_anon / algoliax / chargebeex

[quaresc]

Adds :

• ecto_anon: an ecto library to easily anonymize your data.
• algoliax - An Algolia library for Elixir, usable with Ecto schemas.
• chargebeex - An Elixir client for Chargebee API.

[simonewebdesign]

Could you resolve the conflict? Thank you!

[quaresc]

@simonewebdesign done :)