[Keyboard] Add usable tap-hold defaults for ferris via (#16696)

keyboards/ferris/keymaps/via/config.h

@@ -0,0 +1,9 @@
+// Copyright 2020 Pierre Chevalier <pierrechevalier83@gmail.com>
+// SPDX-License-Identifier: GPL-2.0+
+
+#pragma once
+
+// Good defaults for home row modifiers
+#define TAPPING_TERM 230
+#define IGNORE_MOD_TAP_INTERRUPT
+