Add an `agglayer` check to the monitor

[SantiagoPittella]

We should add the Agglayer as a new monitor card so we can track the status of bridges into and out of the network.

The monitor usually follows one of two approaches: consume a status endpoint or run a network workflow itself.
In this case, there’s no status endpoint we can consume directly, and running full bridge-in/out workflows from the monitor would require handling Ethereum-side transactions and events.

After discussing this with Pablo Vigara (didn't found its GH user), we came up with a separate component that runs these workflows and exposes the status of the latest execution. The monitor would only need to consume that endpoint.

A couple of open questions:

• Where should this component live? IMO, it deserves its own repository.
• Which token should the workflows use: the native token, a dedicated test token, or a configurable token?

[bobbinth]

I remember Gateway had (and maybe still has) something like a smoketest for the Agglayer bridge - maybe that's something that could be adapted here?

Also, we should be able to read the bridge account directly. Doing so may allow us to track when the last bridge transaction happened (@mmagician or @partylikeits1983 would know better than I which parts of the account we'd need to read). So, as the first step here we could show a card with info about last known bridge in/out transactions. And once this is working, we could extend this to use a separate component for status tracking.