Internal - Deprecate usage of itest

We'd like to deprecate the usage of itest and move the tests over to https://github.com/denoland/deno/tree/main/tests/specs

• [ ] bench_tests.rs
• [x] bundle_tests.rs
• [ ] cache_tests.rs
• [ ] cert_tests.rs
• [x] check_tests.rs
• [ ] compile_tests.rs
• [x] coverage_tests.rs
• [x] doc_tests.rs
• [x] eval_tests.rs
• [x] flags_tests.rs
• [ ] fmt_tests.rs
• [x] info_tests.rs
• [ ] init_tests.rs
• [ ] inspector_tests.rs
• [ ] install_tests.rs
• [ ] js_unit_tests.rs
• [x] jsr_tests.rs
• [x] jupyter_tests.rs
• [x] lint_tests.rs
• [ ] lsp_tests.rs
• [x] node_compat_tests.rs
• [ ] node_unit_tests.rs
• [ ] npm_tests.rs
• [ ] pm_tests.rs
• [ ] publish_tests.rs
• [ ] repl_tests.rs
• [x] run_tests.rs
• [ ] shared_library_tests.rs
• [x] task_tests.rs
• [ ] test_tests.rs
• [ ] upgrade_tests.rs
• [ ] vendor_tests.rs
• [ ] watcher_tests.rs
• [x] worker_tests.rs