Add back examples folder for the crate

[CPerezz]

After we started to release new versions of this crate. The examples folder was removed since we weren't able to keep it up to date due to the refactors we were performing.

I think it's a good source of knowledge for the newcomers to the repo and also allows the users to see how to interact with the library on the "recommended way".

[thomasmodeneis]

@CPerezz this will indeed help, +1 here.