added a way to create env function that have access to the executor

src/parser.rs

@@ -1,6 +1,6 @@
 use core::panic;
 
-use crate::lexer::{Token, TokenType};
+use crate::{executor::Executor, lexer::{Token, TokenType}};
 
 #[derive(Debug, Clone, PartialEq)]
 pub enum ASTPart {
@@ -120,7 +120,7 @@ pub struct AstContinue {
 }
 #[derive(Debug, Clone, PartialEq)]
 pub struct AstRustFunction {
-    pub func: fn(Vec<ASTPart>) -> ASTPart,
+    pub func: fn(&mut Executor, Vec<ASTPart>) -> ASTPart,
     pub pos: usize
 }