All supervisor should be names

[Neylix]

Describe the problem you discovered

When we add a new children in a supervisor, we need to use an instruction to restart it in the appup when we create a release and a hot reload.
But there is some supervisor that are not named and it make more complex to create the appup as we need to retrieve the pid of the supervisor.

Describe the solution you'd like

All Supervisor should be named.
We could create a new credo check to ensure this.