Add action-preprocessing kb/user hooks in planck

keyboard/planck/planck.c

@@ -1,14 +1,13 @@
 #include "planck.h"
 
 __attribute__ ((weak))
-void matrix_init_user(void) {
-
-}
+void matrix_init_user(void) {}
 
 __attribute__ ((weak))
-void matrix_scan_user(void) {
+void matrix_scan_user(void) {}
 
-}
+__attribute__ ((weak))
+void process_action_user(keyrecord_t *record) {}
 
 void matrix_init_kb(void) {
 #ifdef BACKLIGHT_ENABLE
@@ -19,7 +18,6 @@ void matrix_init_kb(void) {
 	rgblight_init();
 #endif
 
-
 	// Turn status LED on
 	DDRE |= (1<<6);
 	PORTE |= (1<<6);
@@ -30,3 +28,7 @@ void matrix_init_kb(void) {
 void matrix_scan_kb(void) {
 	matrix_scan_user();
 }
+
+void process_action_kb(keyrecord_t *record) {
+	process_action_user(record);
+}

keyboard/planck/planck.h

@@ -42,5 +42,6 @@
 
 void matrix_init_user(void);
 void matrix_scan_user(void);
+void process_action_user(keyrecord_t *record);
 
 #endif