Remove the commented-out IP range validation in `DhcpConfig` and simplify the `DnsConfig` constructor by removing an unnecessary parameter, addressing several compiler warnings.
- 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`.
