feat(rfdetr): add object detection API (#5923)

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

pkg/utils/base64.go

@@ -20,7 +20,7 @@ var dataURIPattern = regexp.MustCompile(`^data:([^;]+);base64,`)
 
 // GetContentURIAsBase64 checks if the string is an URL, if it's an URL downloads the content in memory encodes it in base64 and returns the base64 string, otherwise returns the string by stripping base64 data headers
 func GetContentURIAsBase64(s string) (string, error) {
-	if strings.HasPrefix(s, "http") {
+	if strings.HasPrefix(s, "http") || strings.HasPrefix(s, "https") {
 		// download the image
 		resp, err := base64DownloadClient.Get(s)
 		if err != nil {