feat: setup as separate command (#604)

* feat: separate setup from startup

* health

* move setup config

* add env vars to caos_local.sh

* fix domain and set devMode explicit

internal/api/http/marshal.go

@@ -0,0 +1,19 @@
+package http
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/caos/logging"
+)
+
+func MarshalJSON(w http.ResponseWriter, i interface{}) {
+	b, err := json.Marshal(i)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("content-type", "application/json")
+	_, err = w.Write(b)
+	logging.Log("HTTP-sdgT2").OnError(err).Error("error writing response")
+}