KCL: rectangle function (#7616)

* KCL test for rectangle

* Rectangle function

* Rectangle helper tests

* Rectangle helper

* Fix clippy lints

* Update docs

* fmt

* Fix bug

* fmt

* Fix doc comments

* Update generated docs

---------

Co-authored-by: Jonathan Tran <jonnytran@gmail.com>

rust/kcl-lib/src/simulation_tests.rs

@@ -3632,6 +3632,48 @@ mod non_english_identifiers {
         super::execute(TEST_NAME, true).await
     }
 }
+mod rect {
+    const TEST_NAME: &str = "rect";
+
+    /// Test parsing KCL.
+    #[test]
+    fn parse() {
+        super::parse(TEST_NAME)
+    }
+
+    /// Test that parsing and unparsing KCL produces the original KCL input.
+    #[tokio::test(flavor = "multi_thread")]
+    async fn unparse() {
+        super::unparse(TEST_NAME).await
+    }
+
+    /// Test that KCL is executed correctly.
+    #[tokio::test(flavor = "multi_thread")]
+    async fn kcl_test_execute() {
+        super::execute(TEST_NAME, true).await
+    }
+}
+mod rect_helper {
+    const TEST_NAME: &str = "rect_helper";
+
+    /// Test parsing KCL.
+    #[test]
+    fn parse() {
+        super::parse(TEST_NAME)
+    }
+
+    /// Test that parsing and unparsing KCL produces the original KCL input.
+    #[tokio::test(flavor = "multi_thread")]
+    async fn unparse() {
+        super::unparse(TEST_NAME).await
+    }
+
+    /// Test that KCL is executed correctly.
+    #[tokio::test(flavor = "multi_thread")]
+    async fn kcl_test_execute() {
+        super::execute(TEST_NAME, true).await
+    }
+}
 mod plane_of {
     const TEST_NAME: &str = "plane_of";