Change getOppositeEdge, getNextAdjacentEdge, and getPreviousAdjacentEdge to keyword args (#6469)

* Change getOppositeEdge, getNextAdjacentEdge, and getPreviousAdjacentEdge to keyword args

* Update generated docs

rust/kcl-lib/src/execution/types.rs

@@ -28,6 +28,10 @@ pub enum RuntimeType {
 }
 
 impl RuntimeType {
+    pub fn edge() -> Self {
+        RuntimeType::Primitive(PrimitiveType::Edge)
+    }
+
     pub fn sketch() -> Self {
         RuntimeType::Primitive(PrimitiveType::Sketch)
     }