Add x-meilisearch-client as header to pass the user agent

Author: bidoubiwa

CONTRIBUTING.md

@@ -59,7 +59,7 @@ Also, the WASM example compilation should be checked:
 
 ```bash
 rustup target add wasm32-unknown-unknown
-cargo check --example web_app --target wasm32-unknown-unknown --features=sync
+cargo check -p web_app --target wasm32-unknown-unknown
 ```
 
 Each PR should pass the tests to be accepted.

src/request.rs

@@ -114,6 +114,9 @@ pub(crate) async fn request<Input: Serialize, Output: DeserializeOwned + 'static
     let mut mut_url = url.clone().to_string();
     let headers = Headers::new().unwrap();
     headers.append("Authorization: Bearer", apikey).unwrap();
+    headers
+        .append("X-Meilisearch-Client", qualified_version().as_str())
+        .unwrap();
 
     let mut request: RequestInit = RequestInit::new();
     request.headers(&headers);
@@ -122,10 +125,8 @@ pub(crate) async fn request<Input: Serialize, Output: DeserializeOwned + 'static
         Method::Get(query) => {
             let query = yaup::to_string(query)?;
 
-            mut_url = if query.is_empty() {
-                mut_url.to_string()
-            } else {
-                format!("{}?{}", mut_url, query)
+            if !query.is_empty() {
+                mut_url = format!("{}?{}", mut_url, query);
             };
 
             request.method("GET");