feat: Add sunaku bilateral combinations

See https://sunaku.github.io/home-row-mods.html
Needs to be compiled with a compatible QMK version, like the one
available here: https://github.com/Tyosa/qmk_firmware

keyboards/splitkb/kyria/keymaps/tyosa/config.h

@@ -20,13 +20,19 @@
 #define SPLIT_ACTIVITY_ENABLE
 
 #define TAPPING_TERM 180
-#define QUICK_TAP_TERM 0
-#define PERMISSIVE_HOLD
-#define TAPPING_TERM_PER_KEY
 
 #define SPLIT_TRANSACTION_IDS_USER USER_SYNC_LUNA
 #define SPLIT_LED_STATE_ENABLE
 
+// Bilateral combinations, following https://sunaku.github.io/home-row-mods.html
+#define BILATERAL_COMBINATIONS
+#define BILATERAL_COMBINATIONS_ALLOW_SAMESIDED_AFTER 500 /*ms*/
+#define BILATERAL_COMBINATIONS_ALLOW_CROSSOVER_AFTER 75 /*ms*/
+#define BILATERAL_COMBINATIONS_DELAY_MODS_THAT_MATCH (MOD_MASK_GUI) /*Delay GUI HRM*/
+#define BILATERAL_COMBINATIONS_DELAY_MATCHED_MODS_BY 120  /* ms */
+#define BILATERAL_COMBINATIONS_TYPING_STREAK_TIMEOUT 160
+#define BILATERAL_COMBINATIONS_TYPING_STREAK_MODMASK (~MOD_MASK_SHIFT)
+
 // Space optimizations
 #define LAYER_STATE_8BIT
 

keyboards/splitkb/kyria/keymaps/tyosa/rules.mk

@@ -1,22 +1,22 @@
 BOOTLOADER=caterina
 
 OLED_ENABLE = yes
-ENCODER_ENABLE = yes       # Enables the use of one or more encoders
+ENCODER_ENABLE = yes
 EXTRAFLAGS += -flto
-MOUSEKEY_ENABLE  = yes # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes # Mouse keys(+4700)
 LTO_ENABLE = yes
 WPM_ENABLE = yes
 TAP_DANCE_ENABLE = yes
-REPEAT_KEY_ENABLE = yes
+DEFERRED_EXEC_ENABLE = yes
 
 # AVR optimizations
-RGB_MATRIX_ENABLE = no     # Disable keyboard RGB matrix, as it is enabled by default on rev3
+RGB_MATRIX_ENABLE = no
 CONSOLE_ENABLE = no
 SPACE_CADET_ENABLE = no
 GRAVE_ESC_ENABLE = no
 MAGIC_ENABLE = no
-RGBLIGHT_ENABLE = no      # Enable keyboard RGB underglow
-UNICODE_ENABLE   = no# Unicode
-COMMAND_ENABLE   = no # Commands for debug and configuration
+RGBLIGHT_ENABLE = no
+UNICODE_ENABLE = no
+COMMAND_ENABLE = no
 LEADER_ENABLE = no
 MUSIC_ENABLE = no