patch 9.1.0026: win32: Windows default font lacking

Problem:  win32: Windows default font lacking (@clach04)
Solution: Improve default font (Ken Takata)

win32: Improve default font

Currently, Fixedsys is the default font on Windows.
It is not suitable for recent High DPI environments.

* Change the default font to Consolas.
* Allow to change the default font by the translation message. E.g.:
  ```
  msgid "DefaultFontNameForWindows"
  msgstr "Courier New"
  ```

fixes: #12919
closes: #13266

Signed-off-by: Ken Takata <kentkt@csc.jp>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/proto/os_mswin.pro b/src/proto/os_mswin.pro
index 17a9ba2..4731010 100644
--- a/src/proto/os_mswin.pro
+++ b/src/proto/os_mswin.pro
@@ -51,6 +51,7 @@
 char *charset_id2name(int id);
 char *quality_id2name(DWORD id);
 void gui_mch_expand_font(optexpand_T *args, void *param, int (*add_match)(char_u *val));
+UINT WINAPI vimGetDpiForSystem(void);
 int get_logfont(LOGFONTW *lf, char_u *name, HDC printer_dc, int verbose);
 void channel_init_winsock(void);
 /* vim: set ft=c : */