feat: add support for L1 to L3 bridging

[godzillaba]

gas estimation is probably the most complicated part of this code.

For ERC20 tokens, use Erc20L1L3Bridger, for ETH, use EthL1L3Bridger

this is how the Erc20L1L3Bridger should be used, note that getDepositRequest returns a feetoken amount

also see the tutorials: OffchainLabs/arbitrum-tutorials#117

const bridger = new Erc20L1L3Bridger(l3Network)

// our deposit parameters
const depositParams = {
  erc20L1Address: l1Token.address,
  to: l3Recipient,
  amount,
  l1Signer,
  l2Provider: l2Signer.provider!,
  l3Provider,
}

// get a deposit request
const depositRequest = await bridger.getDepositRequest(depositParams)

// approve fee token if necessary
if (depositRequest.feeTokenAmount.gt(0)) {
  await (
    await bridger.approveFeeToken({
      l1Signer,
      l2Provider: l2Signer.provider!,
      amount: depositRequest.feeTokenAmount,
    })
  ).wait()
}

// approve token
await (
  await bridger.approveToken({
    erc20L1Address: l1Token.address,
    l1Signer,
    amount: depositParams.amount,
  })
).wait()

// deposit, use the deposit request we generated earlier
// if the fee token is already approved, you don't really need to getDepositRequest first, you can just pass depositParams to deposit
const depositTx = await bridger.deposit({
  l1Signer,
  txRequest: depositRequest.txRequest,
})

const depositReceipt = await depositTx.wait()

// get deposit status, can pass in txHash, tx, or txReceipt
const status = await bridger.getDepositMessages({
  txReceipt: depositReceipt,
  l1Provider: l1Signer.provider!,
  l2Provider: l2Signer.provider!,
  l3Provider,
})