feat: set command name explicitly and use it instead of the sequence number in the output

[vgarvardt]

Makes the output easier to read when reflex is managing several services, especially when there are several reflexes running concurrently with several services in each, so instead of

[00] hello log message
[00] hello again
[01] and also hello from me
[01] and goodbye from me

it is going to be something like

[web-server] hello log message
[web-server] hello again
[data-consumer] and also hello from me
[data-consumer] and goodbye from me

[jcmuller]

You could add the name for the configuration to the verbose output