Revert the revert and fix null pointer issue

This change is all of the changes made in #46 with an additional set of null checks for safety. There was a production issue where all commits were failing due to null email addresses. This occurred as all commits are checked for bots, even if they are so far legit.

src/main/java/org/eclipsefoundation/git/eca/api/BotsAPI.java

@@ -16,7 +16,8 @@ import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
-import org.eclipsefoundation.git.eca.model.BotUser;
+
+import com.fasterxml.jackson.databind.JsonNode;
/**
* Interface for interacting with the Eclipse Foundation Bots API.
@@ -35,5 +36,5 @@ public interface BotsAPI {
*/
@GET
@Produces("application/json")
-	List<BotUser> getBots();
+	List<JsonNode> getBots();
}