chore: Optimize Smart Contract API input and add more tests

[jianlunz-cb]

What changed? Why?

> let sc = await SmartContract.register({networkId: "base-sepolia", contractAddress: "0x0000000071727de22e5e9d8baf0edac6f37da053", abi: [{constant: true,name: "myField",outputs: [{name: "",type: "uint256"}],type: "function"}], contractName: "Test"})
> console.log(sc)
SmartContract {
  model: {
    abi: '[{"constant":true,"name":"myField","outputs":[{"name":"","type":"uint256"}],"type":"function"}]',
    contract_address: '0x0000000071727De22E5e9d8bAF0EdAC6f37dA053',
    contract_name: 'Test',
    is_external: true,
    network_id: 'base-sepolia',
    smart_contract_id: 'c8ef4782-0b4a-41fb-ac85-4891bb4aba5f',
    type: 'custom'
  }
}
> await sc.update({contractName: "Test2"})
SmartContract {
  model: {
    abi: '[{"constant":true,"name":"myField","outputs":[{"name":"","type":"uint256"}],"type":"function"}]',
    contract_address: '0x0000000071727De22E5e9d8bAF0EdAC6f37dA053',
    contract_name: 'Test2',
    is_external: true,
    network_id: 'base-sepolia',
    smart_contract_id: 'c8ef4782-0b4a-41fb-ac85-4891bb4aba5f',
    type: 'custom'
  }
}
> let l = await SmartContract.list()
undefined
> console.log(l.data)
  SmartContract {
    model: {
      abi: '[{"constant":true,"name":"myField","outputs":[{"name":"","type":"uint256"}],"type":"function"}]',
      contract_address: '0x0000000071727de22e5e9d8baf0edac6f37da053',
      contract_name: 'Test2',
      is_external: false,
      network_id: 'base-sepolia',
      smart_contract_id: '',
      type: 'custom'
    }
  }
  ...
]

Qualified Impact

[cb-heimdall]

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