refactor: update project branding and URLs - Replace all instances of 'adguardprivate' with 'nullprivate' - Update server URLs in examples and documentation - Modify script usage examples to reflect new branding - Remove outdated translation cache
refactor: update project branding and URLs - Replace all instances of 'adguardprivate' with 'nullprivate' - Update server URLs in examples and documentation - Modify script usage examples to reflect new branding - Remove outdated translation cache