Add micro benchmark (#7188)

https://torchci-git-addmicro-fbopensource.vercel.app/benchmark/llms?startTime=Thu%2C%2011%20Sep%202025%2016%3A26%3A02%20GMT&stopTime=Thu%2C%2018%20Sep%202025%2016%3A26%3A02%20GMT&granularity=day&lBranch=refs/tags/ciflow/op-benchmark/162530&lCommit=266e00d9d40bd882421ef5d9016cf9640e0faba9&rBranch=refs/tags/ciflow/op-benchmark/162530&rCommit=266e00d9d40bd882421ef5d9016cf9640e0faba9&repoName=pytorch%2Fpytorch&benchmarkName=PyTorch%20operator%20microbenchmark&modelName=All%20Models&backendName=All%20Backends&modeName=All%20Modes&dtypeName=bfloat16&deviceName=cuda%20(NVIDIA%20H100%2080GB%20HBM3)&archName=All%20Platforms

Author: yangw-dev

torchci/components/layout/NavBar.tsx

@@ -130,6 +130,10 @@ function NavBar() {
       name: "vLLM vs SGLang",
       href: "/benchmark/llms?repos=vllm-project%2Fvllm%2Csgl-project%2Fsglang",
     },
+    {
+      name: "PyTorch Operator Microbenchmark",
+      href: "/benchmark/llms?repoName=pytorch%2Fpytorch&benchmarkName=PyTorch+operator+microbenchmark",
+    },
   ].sort((a, b) => a.name.localeCompare(b.name));
 
   const devInfraDropdown = [