Print configuration overview at startup

[benjaminion]

Besu recently implemented dumping the configuration to the console / logon startup. I like this! We should consider something similar fer Teku.

####################################################################################################
#                                                                                                  #
# Besu 22.10.1                                                                                     #
#                                                                                                  #
# Configuration:                                                                                   #
# Network: Mainnet                                                                                 #
# Data storage: Bonsai                                                                             #
# Sync mode: Checkpoint                                                                            #
# RPC HTTP APIs: ETH,NET,WEB3,DEBUG,ADMIN                                                          #
# RPC HTTP port: 8545                                                                              #
# Engine APIs: ENGINE,ETH                                                                          #
# Engine port: 8551                                                                                #
#                                                                                                  #
# Host:                                                                                            #
# Java: openjdk-java-17                                                                            #
# Maximum heap size: 5.00 GB                                                                       #
# OS: linux-x86_64                                                                                 #
# glibc: 2.35                                                                                      #
# Total memory: 15.50 GB                                                                           #
# CPU cores: 6                                                                                     #
#                                                                                                  #
####################################################################################################

[benjaminion]

From stand-up discussion: I'm not wedded to a format. That Besu one is pleasant to me, but I don't use logz.io so have no idea what would work there. The important things are to (safely) enumerate any user-supplied (non-default) options and to summarise the running environment in some format.

Some of the Besu output is just the default settings - that's not required imo.