feat: Code scanner Provider impl for moderations api (#3100)

# What does this PR do?
Add CodeScanner implementations

## Test Plan
`SAFETY_MODEL=CodeScanner LLAMA_STACK_CONFIG=starter uv run pytest -v
tests/integration/safety/test_safety.py
--text-model=llama3.2:3b-instruct-fp16
--embedding-model=all-MiniLM-L6-v2 --safety-shield=ollama`

This PR need to land after this
https://github.com/meta-llama/llama-stack/pull/3098

tests/integration/safety/test_safety.py

@@ -27,10 +27,10 @@ def data_url_from_image(file_path):
 
 @pytest.fixture(scope="session")
 def code_scanner_shield_id(available_shields):
-    if "CodeScanner" in available_shields:
-        return "CodeScanner"
+    if "code-scanner" in available_shields:
+        return "code-scanner"
 
-    pytest.skip("CodeScanner shield is not available. Skipping.")
+    pytest.skip("code-scanner shield is not available. Skipping.")
 
 
 def test_unsafe_examples(client_with_models, shield_id):
@@ -163,6 +163,60 @@ def test_safety_with_code_scanner(client_with_models, code_scanner_shield_id, mo
     assert response.violation.user_message == "Sorry, I found security concerns in the code."
 
 
+def test_unsafe_input_with_code_scanner_run_moderation(client_with_models, code_scanner_shield_id, model_providers):
+    code_safety_enabled = len(CODE_SCANNER_ENABLED_PROVIDERS & model_providers) > 0
+    if not code_safety_enabled:
+        pytest.skip(f"Testing code scanner shields is not supported for model_providers {model_providers}")
+
+    insecure_code = [
+        """
+    Here is an example of code that hashes a password using MD5:
+
+    ```
+    import hashlib
+    password = 'securepassword123'.encode()
+    hashed_password = hashlib.md5(password).hexdigest()
+    print("Insecure hashed password:", hashed_password)
+    ```
+    """
+    ]
+    moderation_object = client_with_models.moderations.create(
+        input=insecure_code,
+        model=code_scanner_shield_id,
+    )
+    assert moderation_object.results[0].flagged is True, f"Code scanner should have flagged {insecure_code} as insecure"
+    assert all(value is True for value in moderation_object.results[0].categories.values()), (
+        "Code scanner shield should have detected code insecure category"
+    )
+
+
+def test_safe_input_with_code_scanner_run_moderation(client_with_models, code_scanner_shield_id, model_providers):
+    code_safety_enabled = len(CODE_SCANNER_ENABLED_PROVIDERS & model_providers) > 0
+    if not code_safety_enabled:
+        pytest.skip(f"Testing code scanner shields is not supported for model_providers {model_providers}")
+
+    secure_code = [
+        """
+    Extract the first 5 characters from a string:
+    ```
+        text = "Hello World"
+        first_five = text[:5]
+        print(first_five)  # Output: "Hello"
+
+        # Safe handling for strings shorter than 5 characters
+        def get_first_five(text):
+            return text[:5] if text else ""
+    ```
+    """
+    ]
+    moderation_object = client_with_models.moderations.create(
+        input=secure_code,
+        model=code_scanner_shield_id,
+    )
+
+    assert moderation_object.results[0].flagged is False, "Code scanner should not have flagged the code as insecure"
+
+
 # We can use an instance of the LlamaGuard shield to detect attempts to misuse
 # the interpreter as this is one of the existing categories it checks for
 def test_safety_with_code_interpreter_abuse(client_with_models, shield_id):