openssl: annotate SSL3_MT_SUPPLEMENTAL_DATA

This adds support for the previously unhandled supplemental data which
in -v output was printed like:

    TLSv1.2 (IN), TLS header, Unknown (23):

These will now be printed with proper annotation:

    TLSv1.2 (OUT), TLS header, Supplemental data (23):

Closes #7652
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

lib/vtls/openssl.c

@@ -2060,6 +2060,10 @@ static const char *ssl_msg_type(int ssl_ver, int msg)
       case SSL3_MT_ENCRYPTED_EXTENSIONS:
         return "Encrypted Extensions";
 #endif
+#ifdef SSL3_MT_SUPPLEMENTAL_DATA
+      case SSL3_MT_SUPPLEMENTAL_DATA:
+        return "Supplemental data";
+#endif
 #ifdef SSL3_MT_END_OF_EARLY_DATA
       case SSL3_MT_END_OF_EARLY_DATA:
         return "End of early data";