- Add abstract Condenser base class
- Add NoopCondenser, RecentEventsCondenser, and LLMCondenser implementations
- Add configuration system using pydantic models
- Make NoopCondenser the default
- Add comprehensive unit tests

- Replace const parameter with Literal type in condenser configs
- Update from_config to check type field directly
- Fix Event creation in LLMCondenser to use direct attribute assignment
- Update memory module imports

…ndling

- Move condenser_config.py from memory/ to core/config/
- Rename AgentConfig.condenser_config to condenser
- Add proper handling of Pydantic models in env var loading
- Add test for condenser config loading
- Add example of LLM condenser config in config.toml