Ability to warn users for AMB transactions executed automatically

[akolotov]

Consider to introduce a mechanism to discover transactions that should be executed automatically. The mechanism must operates through reading a json file which is provided on the ALM deployments phase.

The format of the json file could be as follows:

[
  {
    "OB_message":true,
    "token":"0x..",
    "message":"This is a XXX transfer. In most cases it is executed automatically. Just wait few minutes more"
  },
  {
    "OB_message":true,
    "token":"0x..",
    "recipient":"0x..",
    "message":"This is a YYY transfer. Usually it is executed once a day. Please check the status tomorrow"
  },
  {
    "OB_message":true,
    "recipient":"0x..",
    "message":"This is a YYY transfer. Don't worry and wait for a bit"
  },
  {
    "OB_message":false,
    "sender":"0x..",
    "message":"..."
  },
  {
    "OB_message":false,
    "recipient":"0x..",
    "message":"..."
  },
  {
    "OB_message":false,
    "sender":"0x..",
    "recipient":"0x..",
    "message":"..."
  }
]

So, the idea is to display a message/warning for the user if the message matches with the corresponding template.

For example, by defining:

  {
    "OB_message":true,
    "token":"0x88ad09518695c6c3712ac10a214be5109a655671",
    "recipient":"0x3f615ba21bc6cc5d4a6d798c5950cc5c42937fbd",
    "message":"This is a Tornado Cash Nova transfer. In most cases it is executed automatically. Just wait few minutes more"
  }

users should see a warning when WETH is sent to the Tornado Cash Helper contract through OB.