AP-952 Changed default user-agent

Author: swrnm

src/main/java/sendinblue/ApiClient.java

@@ -85,7 +85,7 @@ public ApiClient() {
         json = new Json();
 
         // Set default User-Agent.
-        setUserAgent("Java-v5.0.0");
+        setUserAgent("sendinblue_clientAPI/v5.0.0/java");
 
         // Setup authentications (key: authentication name, value: authentication).
         authentications = new HashMap<String, Authentication>();