Telegram-Text- und Sprachnachrichten mit Gemini beantworten

## Processing Telegram Messages: This section handles incoming messages from Telegram. It first checks if the message contains text. 1. Text Message: If the message includes text, it's directly routed to the analysis switch node. 2. Audio Message: If the message is an audio file: * The audio file is downloaded. * The audio is transcribed into text. * The transcribed text is then sent to the analysis switch node. Finally, the analyzed text (whether directly from a text message or transcribed from audio) is forwarded for further processing based on the analysis results.