Add lexical scope and redefining variables in functions (#3015)

* Fix to allow variable shadowing inside functions

* Implement closures

* Fix KCL test code to not reference future tag definition

* Remove tag declarator from function parameters

This is an example where the scoping change revealed a subtle issue
with TagDeclarators.  You cannot bind a new tag using a function
parameter.

The issue is that evaluating a TagDeclarator like $foo binds an
identifier to its corresponding TagIdentifier, but returns the
TagDeclarator.  If you have a TagDeclarator passed in as a parameter
to a function, you can never get its corresponding TagIdentifier.

This seems like a case where TagDeclarator evaluation needs to be
revisited, especially now that we have scoped tags.

* Fix to query return, functions, and tag declarator AST nodes correctly

src/wasm-lib/kcl/src/std/mod.rs

@@ -31,7 +31,7 @@ use crate::{
     ast::types::FunctionExpression,
     docs::StdLibFn,
     errors::KclError,
-    executor::{MemoryItem, SketchGroup, SketchSurface},
+    executor::{MemoryItem, ProgramMemory, SketchGroup, SketchSurface},
     std::kcl_stdlib::KclStdLibFn,
 };
 pub use args::Args;
@@ -281,6 +281,7 @@ pub enum Primitive {
 pub struct FnAsArg<'a> {
     pub func: &'a crate::executor::MemoryFunction,
     pub expr: Box<FunctionExpression>,
+    pub memory: Box<ProgramMemory>,
 }
 
 #[cfg(test)]