Migrate tests from `@actions` functions to `@actions` API functions

[NicoSerranoP]

Motivation

We are moving all the p0tion coordinator infrastructure to a single server application (API). We replicated some of the functions from @actions to be compatible with this new API. These functions have the same name plus a suffix `API. For example:

isCoordinator
isCoordinatorAPI

We need to write tests for all these new API functions. We can use the existing tests as a guide but make sure to change anything to make it fit.

Tutorial to setup the API Coordinator application

[0xgun]

Can I work on this ?

[NicoSerranoP]

@0xgun Yes sure! I just updated the issue description with a tutorial to setup The API coordinator in case you need it :)

[0xgun]

I'm not able to find the /packages/api directory.

[NicoSerranoP]

Sorry it is in the feat/nico/cfs-in-backend branch