New balances structure.

[Andrei-Dolgolev]

This pull request includes several changes to the nodebalancer. The most important changes include updating the JSON structure in the README, modifying the balances.go and configs.go files to include additional chain information, and updating the contracts.json structure.

Documentation Updates:

• nodebalancer/README.md: Updated the JSON structure to include additional chain information such as chain_id, name, and image_url. The top-level keys are now chain IDs, and the balances are nested within each chain object. [1] [2]

Codebase Enhancements:

• nodebalancer/cmd/nodebalancer/balances.go: Introduced a new ChainInfo struct to encapsulate chain-related information and updated the BalancesResponse type to use ChainInfo instead of ChainBalances.
• nodebalancer/cmd/nodebalancer/balances.go: Modified the getBalances function to populate the BalancesResponse with ChainInfo objects, including chain_id, name, and image_url.
• nodebalancer/cmd/nodebalancer/configs.go: Added new fields to the ChainConfig struct for chain_id, name, and image_url.

These changes improve the readability and usability of the JSON responses and configuration files by including more detailed information about each blockchain.

response example.

{
  "1": {
    "chain_id": "1",
    "name": "ethereum",
    "image_url": "https://example.com/eth.png",
    "balances": {
      "0x0000000000000000000000000000000000000000": "1000000000000000000",
      "0xdac17f958d2ee523a2206206994597c13d831ec7": "2000000000000000000",
      "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48": "3000000000000000"
    }
  },
  "137": {
    "chain_id": "137", 
    "name": "polygon",
    "image_url": "https://example.com/matic.png",
    "balances": {
      "0x0000000000000000000000000000000000000000": "4000000000000000000",
      "0x2791bca1f2de4661ed88a30c99a7a9449aa84174": "5000000000000000",
      "0xc2132d05d31c914a87c6611c10748aeb04b58e8f": "6000000000000000000"
    }
  }
}

[kompotkot]

lg