- Introduced a new `yaml` macro in `harmony_macros` that validates if the provided YAML string is valid by attempting to deserialize it using `serde_yaml`.
- Added dependencies on `serde`, `serde_yaml` for handling YAML deserialization.
- Included dev dependencies with features enabled for deriving types from `serde`.
- Introduce `bootstrap_load_balancer` module for handling initial load balancing configuration.
- Add `bootstrap_dhcp` module for bootstrapping DHCP settings.
- Create `harmony_types` crate to house shared types, including `MacAddress`.
- Update `harmony_macros` to use `harmony_types` instead of directly referencing `harmony`.
