Add password reset localization and chat configuration

- Implemented German and English localization for password reset functionality.
- Added WebSocket URL resolution logic in chat services to support various environments and configurations.
- Created centralized chat configuration for event keys and payload mappings.
- Developed RoomsView component for admin chat room management, including create, edit, and delete functionalities.

backend/controllers/contactController.js

@@ -1,4 +1,5 @@
 import ContactService from '../services/ContactService.js';
+import Joi from 'joi';
 
 class ContactController {
     constructor() {
@@ -6,9 +7,18 @@ class ContactController {
     }
 
     async addContactMessage(req, res) {
+        const schema = Joi.object({
+            email: Joi.string().email().required(),
+            name: Joi.string().min(1).max(255).required(),
+            message: Joi.string().min(1).max(2000).required(),
+            acceptDataSave: Joi.boolean().required()
+        });
+        const { error, value } = schema.validate(req.body);
+        if (error) {
+            return res.status(400).json({ error: error.details[0].message });
+        }
         try {
-            const { email, name, message, acceptDataSave } = req.body;
-            await ContactService.addContactMessage(email, name, message, acceptDataSave);
+            await ContactService.addContactMessage(value.email, value.name, value.message, value.acceptDataSave);
             res.status(200).json({ status: 'ok' });
         } catch (error) {
             res.status(409).json({ error: error.message });