[Feature]: xquic支持国密即RFC8998

[foxriver1025]

Before request a new feature

• I have searched the issues of this repository and believe that this is not a duplicate.

Describe the feature you'd like supported

QUIC越来越热门，但是目前市面上找不到能支持国密的解决方案，支持国密的HTTP3需求还是有的，目前最接近的解决方案是tengine+xquic+tongsuo，tongsuo已经支持了RFC8998，tengine支持的cipher_suits依赖xquic，就差xquic不支持了，xquic本身调用的tongsuo实现的tls1.3，所以理论上支持起来不难的，应该只需要在xqc_crypto.c中实现sm4的加解码器即可

Describe alternatives you've considered

No response

Additional context

No response