chore: add license metadata and classifiers to pyproject.toml

[Aadil-5122]

Summary

Add license metadata and Python classifiers to pyproject.toml for consistency with hydradb-cli.

Changes

• pyproject.toml — added license = { file = "LICENSE" } and classifiers (Development Status, Python versions, Apache Software License)

Testing

• ruff check . — all checks passed
• ruff format --check . — 13 files already formatted
• python -c "import hydradb_deepeval" — import OK
• No code changes, only metadata

[greptile-apps]

Greptile Summary

This PR adds license = { file = "LICENSE" } and PyPI trove classifiers to pyproject.toml for metadata consistency with hydradb-cli. The LICENSE file (Apache 2.0) already exists in the repo and the declared classifier matches its contents — no code changes are introduced.

Confidence Score: 5/5

Safe to merge — metadata-only change with no code impact.

All findings are P2 style suggestions (missing Python 3.13 classifier, missing :: Only classifier). No code, logic, or runtime behaviour is touched; the LICENSE file exists and matches the declared classifier.

No files require special attention.

Vulnerabilities

No security concerns identified.

Important Files Changed

Filename	Overview
pyproject.toml	Adds license metadata (referencing existing Apache 2.0 LICENSE file) and PyPI trove classifiers; no code changes, LICENSE file present and matches declared classifier.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["pyproject.toml"] -->|"license = { file = 'LICENSE' }"| B["LICENSE (Apache 2.0)"]
    A -->|classifiers| C["PyPI Metadata"]
    C --> D["Development Status :: 4 - Beta"]
    C --> E["Programming Language :: Python :: 3.10/3.11/3.12"]
    C --> F["License :: OSI Approved :: Apache Software License"]
    C --> G["Intended Audience :: Developers"]

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[greptile-apps]

Python 3.13 missing from classifiers

requires-python = ">=3.10" implicitly covers Python 3.13 (and future releases), but the classifier list stops at 3.12. Users browsing PyPI will see no 3.13 badge even though the package is compatible. Consider adding "Programming Language :: Python :: 3.13" and "Programming Language :: Python :: 3 :: Only" to accurately reflect supported versions.

Suggested change

	classifiers = [
	"Development Status :: 4 - Beta",
	"Programming Language :: Python :: 3",
	"Programming Language :: Python :: 3.10",
	"Programming Language :: Python :: 3.11",
	"Programming Language :: Python :: 3.12",
	"Intended Audience :: Developers",
	"License :: OSI Approved :: Apache Software License",
	]
	classifiers = [
	"Development Status :: 4 - Beta",
	"Programming Language :: Python :: 3",
	"Programming Language :: Python :: 3 :: Only",
	"Programming Language :: Python :: 3.10",
	"Programming Language :: Python :: 3.11",
	"Programming Language :: Python :: 3.12",
	"Programming Language :: Python :: 3.13",
	"Intended Audience :: Developers",
	"License :: OSI Approved :: Apache Software License",
	]