add script for rln membership registration

run_register_rln.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+
+if test -f ./keystore/keystore.json; then
+  echo "keystore/keystore.json already exists. Use it instead of creating a new one."
+  echo "Exiting"
+  exit 1
+fi
+
+
+if test -f .env; then
+  echo "Using .env file"  
+  . $(pwd)/.env
+fi
+
+# TODO: Set nwaku release when ready instead of quay
+
+
+exec /usr/bin/wakunode generateRlnKeystore \
+--rln-relay-eth-client-address=http://10.1.0.5:8545 \
+--rln-relay-eth-private-key=0x7c852118294e51e653712a81e05800f419141751be58f605c371e15141b007a6 \
+--rln-relay-eth-contract-address=0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0 \
+--rln-relay-cred-path=/keystore/keystore.json \
+--rln-relay-cred-password="my_secure_keystore_password" \
+--execute