chore(tfstated): refactor helpers to their own package

pkg/helpers/error.go

@@ -0,0 +1,17 @@
+package helpers
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func ErrorResponse(w http.ResponseWriter, status int, err error) {
+	type errorResponse struct {
+		Msg    string `json:"msg"`
+		Status int    `json:"status"`
+	}
+	_ = Encode(w, status, &errorResponse{
+		Msg:    fmt.Sprintf("%+v", err),
+		Status: status,
+	})
+}