Release 0.5.0

Latest Test Bridge deployment## The current deployment

Sepolia ↔ shellnet, deployed from tag v0.5.0.
The CLI, relayers and web form take their addresses from configuration.

Ethereum (Sepolia, chain id 11155111)

AckiNackiBridge	0x6957a8719f1afe3e9131c0f9dedee7f76d7d4c9b
deployment block	11971217
USDC	0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238

Acki Nacki (shellnet)

eccUSDCBridge	0:1a1a…1a1a
version	1.13.0, code hash 66d15d49…
beacon light client	0:9121fc37c8ac55a4fc42a73bccaf725cb0d87b9a8c7dfbc6dd2be7d1690d8462
GraphQL	https://shellnet.ackinacki.org/graphql

What to set

BRIDGE_ADDRESS=0x6957a8719f1afe3e9131c0f9dedee7f76d7d4c9b
BRIDGE_DEPLOY_BLOCK=11971217
FROM_BLOCK=11971217
RPC_URL=https://rpc.sepolia.ethpandaops.io