Implement get_scope_settings

SScope base class should have a method such as def get_scope_settings(self) -> dict[str, str] so that the capture script can do capture_info.update(scope.get_scope_info())
And potentially also something like: def setup_scope(self, capture_info: dict[str, str]) -> None that takes capture_info data and setup of scope using the keys it can understand. This way get_scope_settings() would return all the settings. Sometimes, especially with picoscopes, the scope adjust the settings you give to something it can actually do.