FBE and FBR container and CLI

[nicolasochem]

Right now our packages are generated from the prototype repo.

There is a top-level app.ts for each container that contains hard-coded configuration (such as the node url, the registry address).

Instead, we should be able to launch them as:

flashbake-relay --node-url http://localhost:8732 --registry-address KT1xxx
flashbake-endpoint --node-url http://localhost:8732

The npm packages and containers should be built directly by the monorepo.