[Feature]: specify screenshot parameters when creating a new AndroidDevice #954
Description
What problem does this feature solve?
我的安卓设备实际尺寸比较大，大概20英寸（比笔记本屏幕大些）。实际使用中提示：The image size seems too large (2695x1516). It may lead to more token usage, slower response, and inaccurate result. 所以我希望能够在new AndroidDevice的时候能够让我指定截屏分辨率，这样我可以平衡费用和效果。
What does the proposed API look like?
const page = new AndroidDevice(devices[0].udid, {
screenshot : '1920,1080'
});