Suggested by @MarcoFalke after #14627 and possibly #14420. We should warn if an unrecognised/incorrect section is present in bitcoin.conf. i.e `[testnet]` is present instead of `[test]`.
#include <miner.h>
#include <netbase.h>
#include <net.h>
#include <net_processing.h>
#include <policy/feerate.h>
#include <policy/fees.h>
#include <policy/policy.h>
#include <rpc/server.h>
#include <rpc/register.h>
#include <rpc/blockchain.h>
#include <rpc/util.h>
#include <script/standard.h>
#include <script/sigcache.h>
#include <scheduler.h>
#include <shutdown.h>
#include <timedata.h>
#include <txdb.h>
#include <txmempool.h>
#include <torcontrol.h>
#include <ui_interface.h>
#include <util/system.h>
#include <util/moneystr.h>
#include <validationinterface.h>
#include <warnings.h>
#include <walletinitinterface.h>
#include <stdint.h>
#include <stdio.h>
#ifndef WIN32
#include <signal.h>
#include <sys/stat.h>