feat: add --replace-with flag for client replacement during restart

[KatyaRyazantseva]

Summary

• Add --replace-with flag that works alongside --restart-client to swap clients while keeping the same validator index, keys, and server
• Re-syncs leanpoint when node set changes due to replacement
• Add --logs flag to log client runs

Usage

# Replace zeam_0 with ream_0
NETWORK_DIR=ansible-devnet ./spin-node.sh --restart-client zeam_0 --replace-with ream_0 --useRoot

# Replace first node, just restart second
NETWORK_DIR=local-devnet ./spin-node.sh --restart-client zeam_0,ream_0 --replace-with qlean_0