[Keymap] Drashna split transport improvement (#13905)

* Fix up split stuff

* Fix Split perf issues

* Allow LTO to be disabled

* Fixup WPM and encoders

* Fixup qmk keys per scan

* Add bootloader info

* Change encoder pins

* Fixup corne oled code

* Expand transport sync

* Improve user transport

* Cleanup mouse processing at keymap level

* Improve layer checking for mouse layering

users/drashna/rules.mk

@@ -2,7 +2,9 @@ SRC += drashna.c \
        process_records.c
 
 ifneq ($(PLATFORM),CHIBIOS)
-    LTO_ENABLE        = yes
+    ifneq ($(strip $(LTO_SUPPORTED)), no)
+        LTO_ENABLE        = yes
+    endif
 endif
 SPACE_CADET_ENABLE    = no
 GRAVE_ESC_ENABLE      = no