Add ability to use a FAUCET instead of a MINER for signet

[tee8z]

When we want to disperse funds throughout the cluster, and we are running on a network other then regtest, it would be extremely helpful to have a faucet. This would be a new type of "layer 1" node or maybe a special type like how we have the bitcoind miner now. Once it has been added to the grammar of the DSL it should be configurable on where we are pointing to get the funds as well as maybe the payload itself.

This is a good example of where it might be used in the startup process:

doppler/doppler/src/docker.rs

Line 157 in 8856828

if options.network == "regtest" {

[tee8z]

This is the highest priority for the next feature, having the ability to point at a faucet when starting up a signet simulation greatly improves quality of life while testing/building