[g-plugin-device-renderer] 简化创建 Bindings 的初始化参数

[xiaoiver]

目前创建 Bindings 和 Pipeline 都需要提供 BindingLayouts：

const bindingLayouts = [{ numSamplers: 0, numUniformBuffers: 1 }];
const bindings = device.createBindings({
  pipeline,
  bindingLayout: bindingLayouts[0],
  uniformBufferBindings: [
    {
      buffer: uniformBuffer,
      byteLength: 16 * 4,
    },
  ],
  samplerBindings: [],
});
const pipeline = device.createRenderPipeline({
  bindingLayouts
});

但实际上可以通过 Pipeline 自动生成：
https://www.w3.org/TR/webgpu/#dom-gpupipelinebase-getbindgrouplayout
https://toji.dev/webgpu-best-practices/bind-groups#auto-layout-generation

修改后的用法如下，无需创建 bindingLayouts：

const bindings = device.createBindings({
  pipeline,
  uniformBufferBindings: [
    {
      buffer: uniformBuffer,
      byteLength: 16 * 4,
    },
  ],
  samplerBindings: [],
});
const pipeline = device.createRenderPipeline({});

局限性是只支持一个 bindingGroup。这样 setBindings 也可以简化，第一个参数可以去掉：

// before
renderPass.setBindings(0, bindings);
// after
renderPass.setBindings(bindings);