add default value for node_rpc_url

v0.13.1

Add default value for node_rpc_url

update to octez 9.4

update to octez 9.4, remove --block from snap import

Switch default import url to xtz-shots

Fix: make tezos-client cfg init idempotent

fix(cfg_init) Check if a client config exists before

initializing a new one.