@std
This change aims to replace all relative import specifiers targeted at `tests/util/std` with mapped ones (using a `deno.json` file). Towards updating the `std` git submodule.
removes third_party submodule, tools are installed on-demand. - removed `load_test` and websocket benchmark (covered by benchy) - removed node/bun http benchmarks (covered by benchy) - `dlint` & `dprint` downloaded on-demand. - `wrk` & `hyperfine` downloaded before CI benchmark run. Install locally using: `./tools/install_prebuilt.js wrk hyperfine` #### updating dlint/dprint update version in `tools/util.js` and place binary in `denoland/deno_third_party`.