[Keymap] Drashna keymap updates for 0.18.0 (#18184)

Co-authored-by: Ryan <[email protected]>

users/drashna/split/split_config.h

@@ -0,0 +1,21 @@
+// Copyright 2020 Christopher Courtney, aka Drashna Jael're  (@drashna) <[email protected]>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+// #    define SPLIT_TRANSPORT_MIRROR
+#define SPLIT_LAYER_STATE_ENABLE
+#define SPLIT_LED_STATE_ENABLE
+#define SPLIT_MODS_ENABLE
+#ifdef WPM_ENABLE
+#    define SPLIT_WPM_ENABLE
+#endif
+#ifdef OLED_ENABLE
+#    undef SPLIT_OLED_ENABLE
+#endif
+#if defined(__AVR__) && !defined(SELECT_SOFT_SERIAL_SPEED)
+#    define SELECT_SOFT_SERIAL_SPEED 1
+#endif
+#ifdef CUSTOM_SPLIT_TRANSPORT_SYNC
+#    define SPLIT_TRANSACTION_IDS_USER RPC_ID_USER_STATE_SYNC, RPC_ID_USER_KEYMAP_SYNC, RPC_ID_USER_CONFIG_SYNC, RPC_ID_USER_WATCHDOG_SYNC, RPC_ID_USER_KEYLOG_STR
+#endif