- Replaced Bincode with Postcard for serialization/deserialization across configs and save operations.
- Simplified struct derives by removing `bincode`-specific traits.
- Updated `Cargo.toml` and `Cargo.lock` to include `postcard` and dependencies.
- Added padding stripping for deserialization and improved error handling.
- Adjusted serialization logic in `savegame_manager.rs` and related modules.
- Added `mcutie` as a dependency in `Cargo.toml` and updated `Cargo.lock`.
- Replaced commented-out MQTT logic with fully implemented functionality in `esp.rs`.
- Enhanced MQTT publish and subscription handling with configurable topics and error handling.
- Updated MQTT connection logic to improve reliability and logging.
- Corrected usage of `spawner.spawn` by fixing misplaced error propagation.
- Updated `Cargo.lock` with new and upgraded dependencies, including `base64`, `darling`, and `smoltcp` upgrades.
- Removed `smoltcp`, `defmt`, and associated dependencies as they are no longer used.
- Updated `Cargo.toml` to exclude unused features from `esp-radio`.
- Cleaned up imports in `esp.rs` for better clarity and consistency.
