message: chore(statics): deconstruct metadata in network
  Ticket:
diff: import { CoinFamily } from './base';
  -import * as DotResources from '../resources/dot';
  +import { mainnetMetadataRpc, westendMetadataRpc } from '../resources/dot';
  export enum NetworkType {
  MAINNET = 'mainnet',
  @@ -192,7 +192,7 @@ class Polkadot extends Mainnet implements DotNetwork {
  genesisHash = '0x91b171bb158e2d3848fa23a9f1c25182fb8e20313b2c1eb49219da7a70ce90c3';
  specVersion = 9140;
  chainName = 'Polkadot';
  - metadataRpc = DotResources.mainnetMetadataRpc as `0x${string}`;
  + metadataRpc = mainnetMetadataRpc as `0x${string}`;
  txVersion = 9;
  }
  @@ -204,7 +204,7 @@ class PolkadotTestnet extends Testnet implements DotNetwork {
  genesisHash = '0xe143f23803ac50e8f6f8e62695d1ce9e4e1d68aa36c1cd2cfd15340213f3423e';
  specVersion = 9160;
  chainName = 'Westend';
  - metadataRpc = DotResources.westendMetadataRpc as `0x${string}`;
  + metadataRpc = westendMetadataRpc as `0x${string}`;
  txVersion = 9;
  }
  