在使用相机时，如何设置相机的分辨率？

## Current use version？
#### 当前使用的版本是多少？
v3.11.1、v2.5.0
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## Will this problem occur in demo?
#### Demo能否复现这问题？
demo上看没有设置分辨率的地方。
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## Describe the problem or provide an error log？
#### 描述问题或提供错误log？
在使用相机时，不可以提前设置分辨率。
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Start with the camera configuration exposed by the demo, since the issue says there is currently no place to set resolution. Trace the camera entry point and determine how a preset resolution could be selected; done means users can configure the camera resolution before capture. The issue does not name specific files or tests.

Written by the indexing model from the issue text.