Move benchmark results into a subfolder.

[skip tests]

Author: maleadt

.github/workflows/Benchmark.yml

@@ -56,7 +56,7 @@ jobs:
           name: Metal Benchmarks
           tool: "julia"
           output-file-path: ${{ steps.locate.outputs.path }}
-          benchmark-data-dir-path: ""
+          benchmark-data-dir-path: "bench"
           github-token: ${{ secrets.GITHUB_TOKEN }}
           comment-always: ${{ github.event_name == 'pull_request' }}
           summary-always: true