Added a new Metrics class to represent key performance metrics of a benchmark test run.
- The Metrics class encapsulates various data points like difficulty, success rate, attempted status, success percentage, cost, and runtime.
- Included serialization and deserialization methods for converting between Metrics objects and JSON.
- Added comprehensive documentation to describe the purpose, properties, and methods of the Metrics class.
This commit introduces a new `Config` class, designed to manage and store configuration settings related to the benchmark run. The class contains two key fields:
1. `agentBenchmarkConfigPath`: The path to the agent's benchmark configuration file.
2. `host`: The address of the host where the benchmark is running.
The class includes methods for serialization and deserialization, allowing easy conversion between `Config` objects and JSON maps.
Documentation comments have also been added for better code readability and understanding.
