* setup e2e test that starts kava chain
* refactor into a testify suite
* setup ethClient
* add example test checking chain id
* cleanup
* refactor & support funded accounts with txs
* ignore e2e tests in CI & consolidate makefiles
* remove circular go.mod dependency
vendors `signing` and `grpc` packages from `kava-labs/go-tools` to
refrain from a circular dep and fix pulled in dep versions
* add min fee for evm side
* prune nothing in e2e node
