Support for Chrome Extension 'newtab' app deployment

Users need to deploy Featurebase within a Chrome Extension 'newtab' app to collect feedback from Early Access users. The current challenge is that 'newtab' apps do not have a target URL for validation, which other services struggle with. Featurebase should provide clear guidelines and support for this deployment scenario, including how to handle URL validation. Technical Details: Consider how Featurebase widgets and API can function within a Chrome Extension's Content Security Policy (CSP) and address the lack of a traditional target URL for validation in 'newtab' environments.