By Miranda Murray BERLIN (Reuters) -Germany on Wednesday detained 25 members and supporters of a far-right group that the prosecutor’s office said was preparing a violent overthrow of the state to install as national leader a prince who had sought backing from Russia. Prosecutors said the group was inspired by the deep state conspiracy theories of Germany’s Reichsbuerger and QAnon, whose advocates were among those arrested after the storming of the U.S. Capitol in January 2021. Members of the Reichsbuerger (Citizens of the Reich) do not recognise modern-day Germany as a legitimate state. Some …