feat: Setup i18n migration

[codemod-dev]

📚 Description

This pull request establishes the foundational setup for internationalization (i18n) in the codebase by adding next-intl to package.json dependencies and creating an i18n configuration file. The configuration initializes the library, sets up default language detection with fallback mechanisms, and includes boilerplate for namespace management and resource loading.

Codemod Project

🧪 Test Plan

Please note that this PR is a prerequisite for the i18n codemod and will not have any visible changes in the application. The following steps are recommended to validate the setup:

1. Verify that the i18n library has been added to the project dependencies.
2. Check the i18n configuration file for the correct initialization settings.
3. Ensure that the default language is set up and that fallback behavior is working as expected.
4. Confirm that the i18n setup does not introduce any errors or warnings during the build process.

The following changes will come next:

• Add language-specific translations.
• Implement dynamic language switching.
• Enforce proper linting to prevent hardcoded strings.

📄 Documentation to Update

N/A