Make make localnet command idempotent

Sometimes when running setup something goes wrong and the ./dao-state
dir is still hanging around, requiring manual cleanup nad preventing from simply
re-running the command.

Makefile

@@ -114,6 +114,7 @@ clean-build:
 
 clean-localnet:
 	rm -rf $(STATE_DIR)
+	rm -rf ./dao-setup
 
 # Build all Bisq binaries and generate the shell scripts used to run
 # them in the targets below
@@ -123,7 +124,7 @@ build:
 # Unpack and customize a Bitcoin regtest node and Alice and Bob Bisq
 # nodes that have been preconfigured with a blockchain containing the
 # BSQ genesis transaction
-localnet:
+localnet: clean-localnet
 	# Unpack the old dao-setup.zip and move things around for more concise
 	# and intuitive naming. This is a temporary measure until we clean these
 	# resources up more thoroughly.