feat: implement the Debug trait for Client (#11)

This is useful if you want to include client::Client in your own
implementation and derive Debug.

src/v1/client.rs

@@ -10,6 +10,7 @@ use std::{
 
 use crate::v1::{chat, chat_stream, constants, embedding, error, model_list, tool, utils};
 
+#[derive(Debug)]
 pub struct Client {
     pub api_key: String,
     pub endpoint: String,

src/v1/tool.rs

@@ -1,6 +1,6 @@
 use async_trait::async_trait;
 use serde::{Deserialize, Serialize};
-use std::{any::Any, collections::HashMap};
+use std::{any::Any, collections::HashMap, fmt::Debug};
 
 // -----------------------------------------------------------------------------
 // Definitions
@@ -136,3 +136,9 @@ pub enum ToolChoice {
 pub trait Function {
     async fn execute(&self, arguments: String) -> Box<dyn Any + Send>;
 }
+
+impl Debug for dyn Function {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "Function()")
+    }
+}

tests/v1_client_new_test.rs

@@ -1,6 +1,11 @@
 use jrest::expect;
 use mistralai_client::v1::{client::Client, error::ClientError};
 
+#[derive(Debug)]
+struct _Foo {
+    _client: Client,
+}
+
 #[test]
 fn test_client_new_with_none_params() {
     let maybe_original_mistral_api_key = std::env::var("MISTRAL_API_KEY").ok();