feat: add translation for register messages

public/locales/en.json

@@ -28,7 +28,16 @@
       "register_prompt": "Already have an account?",
       "login_link": "Login",
       "welcome_notification": "Welcome to Maxun!",
-      "error_notification": "Registeration Failed. Please try again."
+      "validation": {
+        "email_required": "Email is required",
+        "password_requirements": "Password must be at least 6 characters"
+      },
+      "error": {
+        "user_exists": "User with this email already exists",
+        "creation_failed": "Could not create account",
+        "server_error": "Server error occurred",
+        "generic": "Registration failed. Please try again"
+      }
     },
     "recordingtable":{
       "run": "Run",