feat: load model from oci image

vendor/go.opentelemetry.io/otel/attribute/encoder.go

@@ -133,9 +133,9 @@ func copyAndEscape(buf *bytes.Buffer, val string) {
 	for _, ch := range val {
 		switch ch {
 		case '=', ',', escapeChar:
-			buf.WriteRune(escapeChar)
+			_, _ = buf.WriteRune(escapeChar)
 		}
-		buf.WriteRune(ch)
+		_, _ = buf.WriteRune(ch)
 	}
 }