Configured model as optional

Author: rmraya

package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "mtengines",
   "productName": "MTEngines",
-  "version": "4.2.0",
+  "version": "4.3.0",
   "description": "Machine Translation (MT) library written in TypeScript",
   "type": "module",
   "keywords": [

package.json

@@ -22,8 +22,11 @@ export class MistralTranslator implements MTEngine {
     srcLang: string = '';
     tgtLang: string = '';
 
-    constructor(apiKey: string) {
+    constructor(apiKey: string, model?: string) {
         this.apiKey = apiKey;
+        if (model) {
+            this.model = model;
+        }
     }
 
     setModel(model: string): void {