Fix #2551: Add Huggingface to provider list in CLI

Co-Authored-By: Joe Moura <joao@crewai.com>

tests/cli/test_constants.py

@@ -0,0 +1,22 @@
+import pytest
+from crewai.cli.constants import PROVIDERS, ENV_VARS, MODELS
+
+
+def test_huggingface_in_providers():
+    """Test that Huggingface is in the PROVIDERS list."""
+    assert "huggingface" in PROVIDERS
+
+
+def test_huggingface_env_vars():
+    """Test that Huggingface environment variables are properly configured."""
+    assert "huggingface" in ENV_VARS
+    assert any(
+        detail.get("key_name") == "HUGGINGFACE_API_KEY"
+        for detail in ENV_VARS["huggingface"]
+    )
+
+
+def test_huggingface_models():
+    """Test that Huggingface models are properly configured."""
+    assert "huggingface" in MODELS
+    assert len(MODELS["huggingface"]) > 0