refact: input data format for multi chain support

[rkdud007]

support multiple destination chain -- for now its evm

{
  "destinationChainId": "ETHEREUM_SEPOLIA",
  "tasks": [
    {
      "type": "DatalakeCompute",
      "datalake": {
        "type": "BlockSampled",
        "chainId": "ETHEREUM_SEPOLIA",
        "blockRangeStart": 6375109,
        "blockRangeEnd": 6375109,
        "increment": 1,
        "sampledProperty": "storage.0xaFE8A72C86d5895DD6616daB26d4b736Cf22472f.0x0000000000000000000000000000000000000000000000000000000000000010"
      },
      "compute": {
        "aggregateFnId": "avg"
      }
    },
    {
      "type": "DatalakeCompute",
      "datalake": {
        "type": "BlockSampled",
        "chainId": "ETHEREUM_MAINNET",
        "blockRangeStart": 100,
        "blockRangeEnd": 110,
        "increment": 1,
        "sampledProperty": "header.number"
      },
      "compute": {
        "aggregateFnId": "avg"
      }
    }
  ]
}

[rkdud007]

turn out i really need huge refactor -- related to #128