fix: absolute import AsyncConfig

[JoeMountWSWS]

Proposed resolution for issue #2216

Export config classes from top-level deepeval package

Exposes AsyncConfig, DisplayConfig, CacheConfig, and ErrorConfig directly from the deepeval package for
easier imports, resolving confusion around module structure.

Changes

• deepeval/init.py: Added config classes to public API and all exports
• tests/test_core/test_imports.py: Added tests verifying new import patterns work correctly
• docs/docs/evaluation-flags-and-configs.mdx: Updated documentation to use cleaner import syntax

Migration

Before:

from deepeval.evaluate.configs import AsyncConfig
from deepeval import evaluate

After (recommended):

from deepeval import AsyncConfig, evaluate

Notes

• Both import patterns work and are fully backward compatible
• No breaking changes to existing code
• Follows Python best practices for package structure
• All tests passing (11/11 import tests)

[vercel]

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