walletnotify.sh: don't check other wallets

[Kexkey]

  for wallet in $(bitcoin-cli listwallets | tr -d ,\")
  do

We should only process transactions from Cyphernode's wallets (spending, watching), not every wallet current loaded in the Bitcoin Node. The node could be used for other stuff beside Cyphernode's features.

[Kexkey]

Let's add %w to the bitcoin.conf's walletnotify line so we can skip processing the tx when it's not part of cyphernode wallet.

[phillamy]

So we process Tx in those three wallets - matching the names :

watching01.dat
xpubwatching01.dat
spending01.dat

I remember we need to change the mosquitto_pub call also since it does not support multiple topics