Add a conceptual document describing GPU sharding and Binpack, and improve the corresponding quick practices

[ZiMengSheng]

Add a concept document describing GPU sharding and sharing and the corresponding scheduling strategy, supplement and improve the component FG (koordlet's FG) and the version alignment matrix with HAMi

[ZiMengSheng]

1. HAMi 用户手册中 FeatureGate 需要提前开启一下：[BUG] The resource isolation for GPU sharing is not taking effect. koordinator#2545
2. 我们官网维护一个 HAMi 和 Koordinator 版本的兼容矩阵就好了