KCL: Add diameter arg to circle (#7116)

Paul's been requesting this for a long time. Now that we're fully using keyword args, this is easy to do.

We should probably add a similar `diameter` arg to `arc`, `tangentialArc`, `polygon` etc. And _maybe_ to `fillet`, but that might not be as helpful.

rust/kcl-lib/src/docs/kcl_doc.rs

@@ -631,6 +631,8 @@ impl FnData {
             return "clone(${0:part001})".to_owned();
         } else if self.name == "hole" {
             return "hole(${0:holeSketch}, ${1:%})".to_owned();
+        } else if self.name == "circle" {
+            return "circle(center = [${0:3.14}, ${1:3.14}], diameter = ${2:3.14})".to_owned();
         }
         let mut args = Vec::new();
         let mut index = 0;

rust/kcl-lib/src/docs/mod.rs

@@ -1018,7 +1018,7 @@ mod tests {
         let snippet = circle_fn.to_autocomplete_snippet();
         assert_eq!(
             snippet,
-            r#"circle(center = [${0:3.14}, ${1:3.14}], radius = ${2:3.14})"#
+            r#"circle(center = [${0:3.14}, ${1:3.14}], diameter = ${2:3.14})"#
         );
     }