[LLMS Benchmark UI][BE]Reorg all llms benchmark code under same folder (#6337)

issue: #6323
# Description
Put llms-benchmark-specific files under component/benchmark/llms
# Overview
this pr simple move everything specifically for llms under
component/benchmark/llms
first step to come up customized component UI for llms.

new& modified files:
- create LlmsPage as main page component, no complicated logic in
pages/benchmark/llms.tsx, it should mainly used as api routing
  - move LlmsReport to its own component instead of nested in LlmsPage. 
- rename component with prefix 'Llms' Since we have similar name
component such as GraphPanel.
  - move convertToCompilerPerformanceData in lib/complier/compierUtils
 
# Demo

https://torchci-9eem5f1do-fbopensource.vercel.app/benchmark/llms?repoName=pytorch%2Fpytorch&benchmarkName=TorchCache+Benchmark

Author: yangw-dev

torchci/components/benchmark/compilers/ModelGraphPanel.tsx

@@ -10,8 +10,10 @@ import {
   TimeSeriesPanelWithData,
 } from "components/metrics/panels/TimeSeriesPanel";
 import dayjs from "dayjs";
-import { convertToCompilerPerformanceData } from "lib/benchmark/aoUtils";
-import { augmentData } from "lib/benchmark/compilerUtils";
+import {
+  augmentData,
+  convertToCompilerPerformanceData,
+} from "lib/benchmark/compilerUtils";
 import { fetcher } from "lib/GeneralUtils";
 import { CompilerPerformanceData } from "lib/types";
 import useSWR from "swr";

torchci/components/benchmark/compilers/SummaryGraphPanel.tsx

@@ -8,14 +8,14 @@ import {
   TimeSeriesPanelWithData,
 } from "components/metrics/panels/TimeSeriesPanel";
 import dayjs from "dayjs";
-import { convertToCompilerPerformanceData } from "lib/benchmark/aoUtils";
 import {
   computeCompilationTime,
   computeExecutionTime,
   computeGeomean,
   computeMemoryCompressionRatio,
   computePassrate,
   computePeakMemoryUsage,
+  convertToCompilerPerformanceData,
   getPassingModels,
 } from "lib/benchmark/compilerUtils";
 import { fetcher } from "lib/GeneralUtils";