Refactor Module into a single record type and fix system globals (#1383)

src/main/java/carpet/script/utils/SystemInfo.java

@@ -42,7 +42,7 @@ public class SystemInfo {
             String name = c.host.getName();
             return name == null?Value.NULL:new StringValue(name);
         });
-        put("app_list", c -> ListValue.wrap(((CarpetScriptHost)c.host).getScriptServer().modules.keySet().stream().filter(Objects::nonNull).map(StringValue::new).collect(Collectors.toList())));
+        put("app_list", c -> ListValue.wrap(((CarpetScriptHost)c.host).scriptServer().modules.keySet().stream().filter(Objects::nonNull).map(StringValue::new).collect(Collectors.toList())));
         put("app_scope", c -> StringValue.of((c.host).isPerUser()?"player":"global"));
         put("app_players", c -> ListValue.wrap(c.host.getUserList().stream().map(StringValue::new).collect(Collectors.toList())));