runtime(vim): Update base-syntax, match :debuggreedy count prefix

Match :0debuggreedy as a special case until better range/count support
is implemented.

closes: #16572

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/syntax/testdir/input/vim_ex_debuggreedy.vim

@@ -0,0 +1,33 @@
+" Vim :debuggreedy command
+
+debuggreedy
+0debuggreedy
+
+debuggreedy  " comment
+0debuggreedy " comment
+
+debuggreedy  | echo "Foo"
+0debuggreedy | echo "Foo"
+
+function Foo()
+  debuggreedy
+  0debuggreedy
+
+  debuggreedy  " comment
+  0debuggreedy " comment
+
+  debuggreedy  | echo "Foo"
+  0debuggreedy | echo "Foo"
+endfunction
+
+def Bar()
+  debuggreedy
+  0debuggreedy
+
+  debuggreedy  # comment
+  0debuggreedy # comment
+
+  debuggreedy  | echo "Foo"
+  0debuggreedy | echo "Foo"
+enddef
+