Misc docs polishing (#6712)

* Fake modules for Rust std lib functions

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Include the missing @ in Rust std lib fns

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Move revolve and mirror2d to better modules

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Use docs from KCL mods for type summaries

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Use type docs to describe types from KCL std lib

Signed-off-by: Nick Cameron <nrc@ncameron.org>

---------

Signed-off-by: Nick Cameron <nrc@ncameron.org>

rust/kcl-lib/src/modules.rs

@@ -95,6 +95,8 @@ pub(crate) fn read_std(mod_name: &str) -> Option<&'static str> {
         "types" => Some(include_str!("../std/types.kcl")),
         "solid" => Some(include_str!("../std/solid.kcl")),
         "units" => Some(include_str!("../std/units.kcl")),
+        "array" => Some(include_str!("../std/array.kcl")),
+        "transform" => Some(include_str!("../std/transform.kcl")),
         _ => None,
     }
 }