[stacked] add ledger ton support

[mkaczanowski]

TL;DR

This PR adds support for signing TON transaction via ledger device. Unfortunately there is a limitation that a transaction with one message can be signed, but that's fine for most of the things we want to execute.

Test plan

This transaction is signed via ledger app

$ npm run staking-cli -- ton tx delegate-pool 0.1 -c ./config.tonpool.testnet.json -s ledger -b
https://testnet.tonviewer.com/transaction/86ecfbcb1c009c8d0a40f7e48727df23d2ee8c207aa97a31a89dc25f4bf8f917

Config

{
  "delegatorAddress": "0QBDG13T98PFkLCpnXzkSPlrDp39aUUhQXTqFaad5cJU4uaz",
  "validatorAddress": "kQAHBakDk_E7qLlNQZxJDsqj_ruyAFpqarw85tO-c03fK26F",
  "validatorAddress2": "kQCltujow9Sq3ZVPPU6CYGfqwDxYwjlmFGZ1Wt0bAYebio4o",

  "ledger": {
    "bounceable": false,
    "accounts": [
      {
        "hdPath": "m/44'/607'/1'/0'/0'/0'"
      }
    ]
  },

  "networkType": "ton",

  "ton": {
    "rpcUrl": "https://testnet.toncenter.com/api/v2/jsonRPC",
    "allowSeamlessWalletDeployment": true,
    "allowTransferToInactiveAccount": false,
    "minimumExistentialBalance": "0",
    "addressDerivationConfig": {
      "walletContractVersion": 4,
      "workchain": 0,
      "bounceable": false,
      "testOnly": true,
      "urlSafe": true,
      "isBIP39": true
    },
    "blockExplorerUrl": "https://testnet.tonviewer.com"
  }
}

[mikalsande]

Looks good 👍 , but there are some things I think we should change when it comes to bounce able messages.

[mikalsande]

LGTM!