Add Per Key functionality for AutoShift (#11536)

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

quantum/process_keycode/process_auto_shift.h

@@ -31,3 +31,4 @@ bool     get_autoshift_state(void);
 uint16_t get_autoshift_timeout(void);
 void     set_autoshift_timeout(uint16_t timeout);
 void     autoshift_matrix_scan(void);
+bool     get_auto_shifted_key(uint16_t keycode, keyrecord_t *record);