Run e2e tests in CI

[bestmike007]

For now, we don't have tests for dependency injections. We need a pipeline to run e2e tests for each of the supported blockchains with the following steps:

1. Run localstack
2. Run server
3. Run backfill to inject recent blocks
4. Use the sdk to fetch

[jiezhang]

make functional is basically the e2e tests you're referring to. For that to work, we need to inject some secrets for the EndpointGroup config.