feat: Enable cross-chain token lists

[chrstph-dvx]

Summary

We can now generate one token list rather than multiple one for each network.
For each token on a given chain, we add information on which chain this token can be bridged from and to.

For example, given the input:

{
  "chainId": 1,
  "name": "Arbitrum",
  "address": "0xB50721BCf8d664c30412Cfbc6cf7a15145234ad1",
  "symbol": "ARB",
  "decimals": 18,
  "logoURI": "https://arbitrum.foundation/logo.png",
}

We have as a result:

{
  "...": "...",
  "tokens": [
    {
      "address": "0xB50721BCf8d664c30412Cfbc6cf7a15145234ad1",
      "chainId": 1,
      "extensions": {
        "bridgeInfo": {
          "42161": {
            "tokenAddress": "0x912CE59144191C1204E64559FE8253a0e49E6548",
            "...": "..."
          },
          "42170": {
            "tokenAddress": "0xf823C3cD3CeBE0a1fA952ba88Dc9EEf8e0Bf46AD",
            "...": "..."
          },
          "1380012617": {
            "tokenAddress": "0xC6bB9Ff34E246302C047BF8b494Fe723c2A7E59f",
            "...": "..."
          }
        }
      }
    },
    {
      "chainId": 42161,
      "address": "0x912CE59144191C1204E64559FE8253a0e49E6548",
      "extensions": {
        "bridgeInfo": {
          "1": {
            "tokenAddress": "0xb50721bcf8d664c30412cfbc6cf7a15145234ad1",
            "...": "..."
          },
          "1380012617": {
            "tokenAddress": "0xC6bB9Ff34E246302C047BF8b494Fe723c2A7E59f",
            "...": "..."
          }
        }
      }
    },
    {
      "chainId": 42170,
      "address": "0xf823C3cD3CeBE0a1fA952ba88Dc9EEf8e0Bf46AD",
      "name": "Arbitrum",
      "symbol": "ARB",
      "decimals": 18,
      "logoURI": "https://raw.githubusercontent.com/trustwallet/assets/master/blockchains/ethereum/assets/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48/logo.png",
      "extensions": {
        "bridgeInfo": {
          "1": {
            "tokenAddress": "0xb50721bcf8d664c30412cfbc6cf7a15145234ad1",
            "...": "..."
          }
        }
      }
    },
    {
      "chainId": 1380012617,
      "address": "0xC6bB9Ff34E246302C047BF8b494Fe723c2A7E59f",
      "name": "Arbitrum",
      "symbol": "ARB",
      "decimals": 18,
      "logoURI": "https://raw.githubusercontent.com/trustwallet/assets/master/blockchains/ethereum/assets/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48/logo.png",
      "extensions": {
        "bridgeInfo": {
          "1": {
            "tokenAddress": "0xb50721bcf8d664c30412cfbc6cf7a15145234ad1",
            "...": "..."
          },
          "42161": {
            "tokenAddress": "0x912ce59144191c1204e64559fe8253a0e49e6548",
            "...": "..."
          }
        }
      }
    }
  ]
}

From a Bridge UI point of view, this enable us to store tokens by a tuple (chain id, address on the chain) rather than storing everything by L1 address which causes issues for some tokens (USDC for example)