Add Chinese keyboard support

[user.764669]

Maintenance is necessary, and system functions such as input methods should also be popularized in most countries.。Please add a Chinese input method. Although Quest is not sold in China, many people have actually bought it through Japan, with at least tens of thousands of people. But due to the lack of a Chinese input method, many people are troubled and buy Pico because Quest does not have a Chinese input method. They hope that developers can add a Chinese input method