chore: add chromadb optional dependency

Add chromadb>=0.5.0 as optional dependency in pyproject.toml

Related to #1214

Author: ambicuity

pyproject.toml

@@ -67,6 +67,7 @@ dev = ["pytest", "pytest-asyncio", "ruff", "mypy", "pre-commit"]
 embeddings = ["sentence-transformers>=3.3.1"]
 colpali = ["colpali-engine"]
 lancedb = ["lancedb>=0.25.0"]
+chromadb = ["chromadb>=0.5.0"]
 pydantic = ["pydantic>=2.11.9"]
 
 # We need to repeat the dependency above to make it available for the `all` feature.