BLF: Enable Filtering of woff and woff2 Fonts

Add files with extension ".woff" and ".woff2" to FILE_TYPE_FTFONT
file type. Allows selecting and using these types of font files.

See D13822 for more details.

Differential Revision: https://developer.blender.org/D13822

Reviewed by Campbell Barton

source/blender/blenfont/intern/blf_font.c

@@ -1238,6 +1238,12 @@ FontBLF *blf_font_new(const char *name, const char *filename)
   font = (FontBLF *)MEM_callocN(sizeof(FontBLF), "blf_font_new");
   err = FT_New_Face(ft_lib, filename, 0, &font->face);
   if (err) {
+    if (ELEM(err, FT_Err_Unknown_File_Format, FT_Err_Unimplemented_Feature)) {
+      printf("Format of this font file is not supported\n");
+    }
+    else {
+      printf("Error encountered while opening font file\n");
+    }
     MEM_freeN(font);
     return NULL;
   }

source/blender/editors/space_file/filelist.c

@@ -2783,7 +2783,8 @@ int ED_path_extension_type(const char *path)
                                  NULL)) {
     return FILE_TYPE_TEXT;
   }
-  if (BLI_path_extension_check_n(path, ".ttf", ".ttc", ".pfb", ".otf", ".otc", NULL)) {
+  if (BLI_path_extension_check_n(
+          path, ".ttf", ".ttc", ".pfb", ".otf", ".otc", ".woff", ".woff2", NULL)) {
     return FILE_TYPE_FTFONT;
   }
   if (BLI_path_extension_check(path, ".btx")) {