refactor: move all testing to top-level of repo

Closes https://github.com/BerriAI/litellm/issues/486

tests/local_testing/test_google_ai_studio_gemini.py

@@ -0,0 +1,39 @@
+import os, sys, traceback
+
+sys.path.insert(
+    0, os.path.abspath("../..")
+)  # Adds the parent directory to the system path
+import litellm
+from dotenv import load_dotenv
+
+
+def generate_text():
+    try:
+        litellm.set_verbose = True
+        messages = [
+            {
+                "role": "user",
+                "content": [
+                    {"type": "text", "text": "What is this image?"},
+                    {
+                        "type": "image_url",
+                        "image_url": {
+                            "url": "https://avatars.githubusercontent.com/u/17561003?v=4"
+                        },
+                    },
+                ],
+            }
+        ]
+        response = litellm.completion(
+            model="gemini/gemini-pro-vision",
+            messages=messages,
+            stop="Hello world",
+            num_retries=3,
+        )
+        print(response)
+        assert isinstance(response.choices[0].message.content, str) == True
+    except Exception as exception:
+        raise Exception("An error occurred during text generation:", exception)
+
+
+# generate_text()