add e2e test including `packet-forward-middleware`

[mtsitrin]

while PFM has it's own UT it's important to cover different scenarios of the integration between PFM and delayack middleware

[mtsitrin]

We need to test the different interactions between the middleware (PFM, delayedAck, denomMetadata, bridge_n_lock)

Suggested tests:

1. tendermint -> hub(forward) -> rollapp: happy flow
2. rollapp -> hub(forward) -> tendermint: happy flow
3. rollapp -> hub(forward) -> rollapp: happy flow
4. rollapp -> hub: test bridge and lock with delayed ack
5. tendermint -> tendermint (forward) -> hub: test PFM + bridge_and_lock

@omritoptix WDYT