move api/server to api/edge/bff

api/edge/bff/internal/mutil/imagewriter/imagewriter.go

@@ -0,0 +1,15 @@
+package imagewriter
+
+import (
+	"net/http"
+	"strconv"
+)
+
+func WriteImage(w http.ResponseWriter, buffer *[]byte, fileType string) error {
+	w.Header().Set("Content-Type", fileType)
+	w.Header().Set("Content-Length", strconv.Itoa(len(*buffer)))
+	w.WriteHeader(http.StatusOK)
+
+	_, err := w.Write(*buffer)
+	return err
+}