Improve error logging in ConnectLib and enhance LangType documentation

Author: Sandro642

src/main/java/fr/sandro642/github/ConnectLib.java

@@ -86,7 +86,7 @@ public static String getRoute(String routeName) {
         if (routes.containsKey(routeName)) {
             return routes.get(routeName);
         } else {
-            ConnectLib.Logger().ERROR("Route '" + routeName + "' not found in the ConnectorAPI routes.");
+            ConnectLib.Logger().ERROR(langManager.getMessage("connectlib.class", "getroute.error", Map.of("route", routeName)));
             return null;
         }
     }

src/main/java/fr/sandro642/github/enums/LangType.java

@@ -1,5 +1,12 @@
 package fr.sandro642.github.enums;
 
+/**
+ * LangType is an enumeration representing different language codes used in the ConnectLib library.
+ *
+ * @author Sandro642
+ * @version 1.0
+ */
+
 public enum LangType {
     ENGLISH("EN_US"),
     FRENCH("FR_EU"),
@@ -9,12 +16,23 @@ public enum LangType {
     PORTUGUESE("PT_EU"),
     RUSSIAN("RU_RU");
 
+    /**
+     * Language code.
+     */
     private final String lang;
 
+    /**
+     * Constructor to initialize the language code.
+     * @param lang
+     */
     LangType(String lang) {
         this.lang = lang;
     }
 
+    /**
+     * Get the language code.
+     * @return
+     */
     public String getLang() {
         return lang;
     }