Add Hermes memory evaluation framework with LoCoMo dataset support

- Implement HermesClient for interacting with the Hermes CLI.
- Create judge module for grading QA outputs from Hermes memory.
- Develop LoCoMo dataset parsing and formatting utilities.
- Introduce run_eval script to facilitate memory evaluation using LoCoMo-style datasets.

eval/hermes_memory_eval/__init__.py

@@ -0,0 +1,2 @@
+"""Hermes memory evaluation helpers."""
+