patch 9.0.1658: autoload files for "zig" are not installed

Problem:    Autoload files for "zig" are not installed.
Solution:   Add install and uninstall rules in the makefile. (Christian
            Brabandt, closes #12577, closes #12567)
diff --git a/src/version.c b/src/version.c
index f847175..a9c61ad 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1658,
+/**/
     1657,
 /**/
     1656,