GetConfig returns a config for the test cases as a singleton.

NewTendermint creates a new CometBFT server and sleeps forever.

RecreateConfig instructs the RPC test to recreate the configuration each time, instead of treating it as a global singleton.

StartTendermint starts a test CometBFT server in a go routine and returns when it is initialized.

StopTendermint stops a test CometBFT server, waits until it's stopped and cleans up test/config files.

SuppressStdout is an option that tries to make sure the RPC test CometBFT node doesn't log anything to stdout.

Options helps with specifying some parameters for our RPC testing for greater control.