Introduce localization framework to the VulnerableApp-facade

[preetkaran20]

Currently, VulnerableApp-Facade doesn't support localization and the entire text is in English, we need to introduce localization support where a different file will contain all the locale-specific text, and based on the user's locale, we change to specific text. Not only at VulnerableApp-Facade level, we need to pass the locale ( if not passed from UI) to other VulnerableApplications as part of request header.