feat: impl serde on errythang

crates/aiken-lang/src/parser/extra.rs

@@ -1,7 +1,7 @@
 use crate::ast::Span;
 use std::iter::Peekable;
 
-#[derive(Debug, PartialEq, Eq, Default, Clone)]
+#[derive(Debug, PartialEq, Eq, Default, Clone, serde::Serialize, serde::Deserialize)]
 pub struct ModuleExtra {
     pub module_comments: Vec<Span>,
     pub doc_comments: Vec<Span>,

crates/aiken-lang/src/parser/token.rs

@@ -1,6 +1,6 @@
 use std::fmt;
 
-#[derive(Clone, Debug, PartialEq, Hash, Eq, Copy)]
+#[derive(Clone, Debug, PartialEq, Hash, Eq, Copy, serde::Serialize, serde::Deserialize)]
 pub enum Base {
     Decimal { numeric_underscore: bool },
     Hexadecimal,