feat: isolate test config from main config (#1063)

Co-authored-by: Charles Packer <packercharles@gmail.com>

tests/config.py

@@ -0,0 +1,7 @@
+import os
+from memgpt.config import MemGPTConfig
+from memgpt.constants import MEMGPT_DIR
+
+
+class TestMGPTConfig(MemGPTConfig):
+    config_path: str = os.getenv("TEST_MEMGPT_CONFIG_PATH") or os.getenv("MEMGPT_CONFIG_PATH") or os.path.join(MEMGPT_DIR, "config")