patch 9.1.0563: Cannot process any Key event

Problem:  Cannot process any Key event
Solution: Add the KeyInputPre autocmd
          (Shougo Matsushita)

closes: #15182

Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Co-authored-by: K.Takata <kentkt@csc.jp>
Signed-off-by: Shougo Matsushita <Shougo.Matsu@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/proto/autocmd.pro b/src/proto/autocmd.pro
index 4a502da..920987a 100644
--- a/src/proto/autocmd.pro
+++ b/src/proto/autocmd.pro
@@ -26,6 +26,7 @@
 int has_textchangedI(void);
 int has_textchangedP(void);
 int has_insertcharpre(void);
+int has_keyinputpre(void);
 int has_cmdundefined(void);
 int has_textyankpost(void);
 int has_completechanged(void);