move Connection interface to api/database, and edgejob type definitions to api/dataservices/edgejobs to reduce the number of deps on portainer., and make deps on specific structures more obvious

Signed-off-by: Sven Dowideit <sven.dowideit@portainer.io>

api/http/handler/endpointproxy/proxy_docker.go

@@ -5,6 +5,7 @@ import (
 	httperror "github.com/portainer/libhttp/error"
 	"github.com/portainer/libhttp/request"
 	portainer "github.com/portainer/portainer/api"
+	"github.com/portainer/portainer/api/database"
 	"strconv"
 	"strings"
 
@@ -17,7 +18,7 @@ func (handler *Handler) proxyRequestsToDockerAPI(w http.ResponseWriter, r *http.
 		return &httperror.HandlerError{http.StatusBadRequest, "Invalid environment identifier route variable", err}
 	}
 
-	endpoint, err := handler.DataStore.Endpoint().Endpoint(portainer.EndpointID(endpointID))
+	endpoint, err := handler.DataStore.Endpoint().Endpoint(database.EndpointID(endpointID))
 	if handler.DataStore.IsErrObjectNotFound(err) {
 		return &httperror.HandlerError{http.StatusNotFound, "Unable to find an environment with the specified identifier inside the database", err}
 	} else if err != nil {