[shell] build vim as a real package

Bug: PKG-46 #comment move vim to a real package
Test: manual
Change-Id: I45f08a26cd7228e28b97b8fa524fe8da3f11f371
diff --git a/BUILD.gn b/BUILD.gn
index 0e4895c..dbcb091 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -123,13 +123,14 @@
 }
 
 package("vim") {
-  deprecated_system_image = true
-
   deps = [
     ":vim_bin",
   ]
 
-  binaries = [ {
-        name = "vim"
-      } ]
+  binaries = [
+    {
+      name = "vim"
+      shell = true
+    },
+  ]
 }