Type check and coerce arguments to user functions and return values from std Rust functions (#6958)

* Shuffle around function call code

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

* Refactor function calls to share more code

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

* Hack to leave the result of revolve as a singleton rather than array

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

---------

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

rust/kcl-lib/src/parsing/ast/types/mod.rs

@@ -3374,6 +3374,13 @@ impl DefaultParamVal {
     pub(crate) fn none() -> Self {
         Self::KclNone(KclNone::default())
     }
+
+    pub(crate) fn source_range(&self) -> SourceRange {
+        match self {
+            DefaultParamVal::Literal(l) => l.as_source_range(),
+            DefaultParamVal::KclNone(_) => SourceRange::default(),
+        }
+    }
 }
 
 /// Parameter of a KCL function.