e2e test setup

[bap2pecs]

refs

• https://github.com/babylonchain/finality-provider/tree/dev/itest
• https://github.com/babylonchain/finality-provider/blob/37429abec0a514c4dbf95074fb231ff8464fdca8/itest/babylon_node_handler.go

[bap2pecs]

irrelevent anymore. for e2e, we already added our tests in the FP repo. this repo should contain mostly unit tests