runtime(vim): include Vim Syntax generator

fixes: #13939
closes: #14021
related: vim-jp/syntax-vim-ex#28

Signed-off-by: h-east <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/Filelist b/Filelist
index 237923e..acc9318 100644
--- a/Filelist
+++ b/Filelist
@@ -827,6 +827,11 @@
 		runtime/syntax/testdir/runtest.vim \
 		runtime/syntax/testdir/input/*.* \
 		runtime/syntax/testdir/dumps/*.dump \
+		runtime/syntax/generator/Makefile \
+		runtime/syntax/generator/README.md \
+		runtime/syntax/generator/gen_syntax_vim.vim \
+		runtime/syntax/generator/update_date.vim \
+		runtime/syntax/generator/vim.vim.base \
 
 # Unix runtime
 RT_UNIX =	\