add initial Garak tests

tests/tools/garak.config.yml

@@ -0,0 +1,5 @@
+run:
+    generations: 1
+
+plugins:
+    probe_spec: promptinject.HijackHateHumansMini

tests/tools/garak.rest.json

@@ -0,0 +1,19 @@
+{
+    "rest": {
+        "RestGenerator": {
+            "name": "Microsoft ONNX Phi-3 LLM/GenAI REST API Service",
+            "uri": "http://localhost:9999/",
+            "method": "post",
+            "headers": {
+                "Content-Type": "application/json"
+            },
+            "req_template_json_object": {
+                "prompt": "$INPUT"
+            },
+            "response_json": true,
+            "response_json_field": "response",
+            "request_timeout": 120,
+            "verify_ssl": false
+        }
+    }
+}