feat: add Dutch language support (#420)

Author: tomootes

README.md

@@ -100,6 +100,17 @@ docker run -p 8080:80 publiccode-editor
 
 you can run the Docker container and see the results at [`http://localhost:8080`](http://localhost:8080).
 
+## Localization
+
+To access the web-app in a specific language use the `lang` param like this: `https://publiccode-editor-develop.vercel.app/?lang=en`.
+
+The languages that can be picked are:
+- "it" 🇮🇹
+- "en" 🇬🇧
+- "fr" 🇫🇷
+- "de" 🇩🇪
+- "nl" 🇳🇱
+
 ## Contributing
 
 We welcome contributions!

src/i18n/index.ts

@@ -9,14 +9,16 @@ import en from "./locales/en.json";
 import fr from "./locales/fr.json";
 import it from "./locales/it.json";
 import de from "./locales/de.json";
+import nl from "./locales/nl.json";
 
 type LocalizedEntity = 'language' | 'region';
 
 const resources = {
   it: { translation: it },
   en: { translation: en },
   fr: { translation: fr },
-  de: { translation: de } 
+  de: { translation: de },
+  nl: { translation: nl },
 };
 
 i18n