Adding --external-ip-map and --dns-resolver-address to up command and shorthand option to global flags.
Refactor get and read config functions with new ConfigInput type.
updated cobra package to latest release.
Added MacOS icons, plist, and cask template file
Adjusted goreleaser with the new name for all builds
Added Icon and update windows-ui build to include it and avoid console
migrated Docker builds to new namespace netbirdio
