post
https://app.bitgo-test.com/api/tradfi/v1/plaid/link/token
Creates a Plaid Link token for initiating the Plaid Link flow.
The token is used to open Plaid Link in the client application, allowing
users to connect their bank accounts. After the user completes the Plaid
Link flow, use the /api/tradfi/v1/plaid/link/token/exchange endpoint
with the returned token (as linkToken) and the publicToken received
from Plaid Link to complete the bank account linking process.