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/optiondefs.h b/src/optiondefs.h
index 8326537..a8d7972 100644
--- a/src/optiondefs.h
+++ b/src/optiondefs.h
@@ -655,6 +655,10 @@
 			    {(char_u *)0L, (char_u *)0L}
 #endif
 			    SCTX_INIT},
+    {"completefuzzycollect", "cfc", P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
+			    (char_u *)&p_cfc, PV_NONE, did_set_completefuzzycollect, NULL,
+			    {(char_u *)"", (char_u *)0L}
+			    SCTX_INIT},
     {"completeitemalign", "cia", P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
 			    (char_u *)&p_cia, PV_NONE, did_set_completeitemalign, NULL,
 			    {(char_u *)"abbr,kind,menu", (char_u *)0L}