Please allow modification of Gemini's API URL

[OrO-c]

Due to certain special circumstances in China, we are unable to directly request API URLs
so I set up a mirror and found that it cannot be changed

[Taewan-P]

This is not currently possible because the app is using the official library. #160 (comment) In order to change this, it has to be implemented from scratch, like Claude.

[PeronGH]

I believe it can now be resolved by switching to the Google GenAI SDK for Java, which supports custom base URL.