patch 9.1.1178: not possible to generate completion candidates using fuzzy matching

Problem:  not possible to generate completion candidates using fuzzy
          matching
Solution: add the 'completefuzzycollect' option for (some) ins-completion
          modes (glepnir)

fixes #15296
fixes #15295
fixes #15294
closes: #16032

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/proto/optionstr.pro b/src/proto/optionstr.pro
index 11b9d05..6fd26ba 100644
--- a/src/proto/optionstr.pro
+++ b/src/proto/optionstr.pro
@@ -43,6 +43,7 @@
 char *did_set_completeopt(optset_T *args);
 int expand_set_completeopt(optexpand_T *args, int *numMatches, char_u ***matches);
 char *did_set_completeitemalign(optset_T *args);
+char *did_set_completefuzzycollect(optset_T *args);
 char *did_set_completepopup(optset_T *args);
 char *did_set_completeslash(optset_T *args);
 int expand_set_completeslash(optexpand_T *args, int *numMatches, char_u ***matches);