[Keymap] Update personal userspace and keymaps (#8747)

* Update mousekey parameters in userspace

* Disable GRAVE_ESC in boards where it isn't used

* Tweak MODERN_DOLCH_RED and reset RGB on Shift+Toggle in KBD6X

* Disable RGB controls when Fn/Caps indicator lights are on

* Use LTO_ENABLE instead of setting -flto directly

* Add led_update_keymap, use SS_LCTL instead of SS_LCTRL

* Change TAPPING_TOGGLE from 2 to 3

users/konstantin/rules.mk

@@ -13,4 +13,4 @@ ifneq (,$(filter yes,$(UNICODE_ENABLE) $(UNICODEMAP_ENABLE)))
     SRC += unicode.c
 endif
 
-EXTRAFLAGS += -flto
+LTO_ENABLE = yes