Implement Blomberg AC protocol

[Thepowa753]

This pull request introduces support for Blomberg air conditioner IR remote control by adding a new IRBlombergAc class. The implementation provides methods to manipulate and transmit IR commands specific to Blomberg AC units, including state management, encoding/decoding, and device feature controls.

New Blomberg AC IR Protocol Support:

• Added IRBlombergAc class in ir_Blomberg.h and ir_Blomberg.cpp to encapsulate all logic for Blomberg AC IR communication, including state management and IR transmission. [1] [2]

Device Control Methods:

• Implemented methods in IRBlombergAc for setting and getting AC features such as power, mode, temperature, fan speed, swing, LED, and turbo, allowing granular control over device state.

Protocol Constants and State Handling:

• Defined protocol-specific constants (e.g., state length, temperature limits, mode/fan codes) and provided methods to reset, set, and retrieve the internal state buffer representing the IR command. [1] [2]

Checksum and Validation:

• Implemented checksum calculation and validation methods to ensure data integrity of the IR command payload before transmission.

IR Transmission Integration:

• Integrated with the existing IR sending infrastructure, allowing commands to be sent via the send method and supporting repeated transmissions as needed.

[NiKiZe]

No tests are provided, so raw captures from original remote with all temperature settings lowest to highest would be good.

The standard way to have state is with union struct. Is this based on something old? Asking since this isn't matching the current style of the library.