Happy path rate-limiting e2e with IBC v2

[gjermundgaraba]

Write one happy path rate-limiting e2e with IBC v2 that simply verifies that rate-limiting is applied correctly on IBC v2 transfers.

[linear]

IBCGO-2372 Happy path rate-limiting e2e with IBC v2

[gjermundgaraba]

You can either copy the dependency on the go-relayer-api in the linked PR, or branch from it directly: #8559

I will clean it up more later, but if you get a working e2e test on this I can take it over the finish line.