Make devtools support anonymous functions names

[Poyoman39]

With actual implementation of devtools i need to do this:

create(set => ({ setSmth: smth => set({ smth }, false, 'setSmth'), })

to have a caller name inside devtools.

Would be nice to keep it simple and make devtools retrieve the key name as a caller name:

create(set => ({ setSmth: smth => set({ smth }), })

[Poyoman39]

Duplicate of #2660