Add a new method to the ConnectorInterface to fetch Repos by name

[0xGabi]

Try to answer the question: What is the content of Repo? It is quite common. We should include new method repoByName that handle and parse a query in the lines of:

query {
  repos(where: { name: $name }) {
    id
    name
    lastVersion {
      codeAddress
      artifact
      semanticVersion
    }
  }
}