add message subscription service with logos-delivery-js

[delphamk]

rest-traffic service (write messages):

• Rename to traffic-post
• Update message payload to version 0 instead of 1 (waku-js fails to parse version 1)
• Update Python to use uv package manager and update Dockerfile
• Added steps to README.md to run the service outside of Docker

traffic-subscribe service (read messages):

• Created waku-js service to listen to messages on the cluster
• The service calls running waku nodes and fetches the enrUri. Cluster multiaddrs are decoded from the ENR string, then waku-js connects to the cluster.
• When a message is received, it logs the payload size in bytes. This can be changed to log the payload for debugging.
• Added steps to README.md to run the service outside of Docker

waku nodes:

• Enable WebSocket support for waku-js
• Enable filter for waku-js subscription

# .env config tested with
export LD_IMAGE=wakuorg/nwaku:v0.38.0
export NUM_LD_NODES=3
export MSG_SIZE_KBYTES=10
export TRAFFIC_DELAY_SECONDS=6
export WATCHTOWER_ENABLED=false
export RPC_URL=http://foundry:8545
export PRIVATE_KEY=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
export ETH_FROM=0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266
export RLN_RELAY_MSG_LIMIT=100
export RLN_RELAY_EPOCH_SEC=600
export RLN_CREDENTIAL_PASSWORD=passw123

[delphamk]

need to update this message

[delphamk]

small difference but can revert this to 15

[delphamk]

can add topic argument here and to traffic-post. --topic=$TOPIC:my-topic to be more verbose