Add tBTC to CROSS-CHAIN UI

[lolmcshizz]

1000765
[
    [
      {
        parents: 2
        interior: {
          X2: [
            {
              GlobalConsensus: {
                Ethereum: {
                  chainId: 1
                }
              }
            }
            {
              AccountKey20: {
                network: null
                key: 0x18084fba666a33d37592fa2633fd49a74dd93a88
              }
            }
          ]
        }
      }
    ]