Expose REST api to expose the event provisioning / deployment functionalities

[noandrea]

Endpoints

• List Events @noandrea
• Get Event By ID @noandrea
• Create Event @noandrea
• Destroy Event @noandrea

[noandrea]

@randomshinichi most of the api endpoint are ready,
I think there should be an additional one for deploy the chain.

On top of that there is also the needs implement some sort of login/auth management

I've link the PR from the branch that I am working on

[noandrea]

Added swagger documentation, what is missing is to get the API not to leak sensible data