Add benchmarking scripts and utilities for vLLM performance evaluation

benchmarks/pyproject.toml

+# This local pyproject file is part of the migration from yapf to ruff format.
+# It uses the same core rules as the main pyproject.toml file, but with the
+# following differences:
+# - ruff line length is overridden to 88
+# - deprecated typing ignores (UP006, UP035) have been removed
+
+[tool.ruff]
+line-length = 88
+
+[tool.ruff.lint.per-file-ignores]
+"vllm/third_party/**" = ["ALL"]
+"vllm/version.py" = ["F401"]
+"vllm/_version.py" = ["ALL"]
+
+[tool.ruff.lint]
+select = [
+    # pycodestyle
+    "E",
+    # Pyflakes
+    "F",
+    # pyupgrade
+    "UP",
+    # flake8-bugbear
+    "B",
+    # flake8-simplify
+    "SIM",
+    # isort
+    "I",
+    # flake8-logging-format
+    "G",
+]
+ignore = [
+    # star imports
+    "F405", "F403",
+    # lambda expression assignment
+    "E731",
+    # Loop control variable not used within loop body
+    "B007",
+    # f-string format
+    "UP032",
+    # Can remove once 3.10+ is the minimum Python version
+    "UP007",
+]
+
+[tool.ruff.lint.isort]
+known-first-party = ["vllm"]
+
+[tool.ruff.format]
+docstring-code-format = true
\ No newline at end of file

benchmarks/structured_schemas/structured_schema_1.json

+{
+    "type": "object",
+    "properties": {
+      "name": { "type": "string" },
+      "email": { "type": "string" },
+      "street": { "type": "string" },
+      "city": { "type": "string" },
+      "state": { "type": "string" },
+      "zip": { "type": "string" },
+      "phone": { "type": "string" },
+      "website": { "type": "string" },
+      "company": { "type": "string" },
+      "age": { "type": "integer" }
+    },
+    "required": [
+      "name",
+      "email"
+    ]
+}