-Replaced timer-based UART data reception with SysTick timer implementation.
- Modified the UART interrupt handler to manage interrupts effectively.
- Updated MCAL layer for CAN to ensure proper handling of FIFO in RX interrupts.
- Corrected the deinitialization function in the MCAL layer of CAN.
- Implemented a handler for managing lastErrCode in CAN interrupts.
- Removed all debug print statements and unnecessary CAN filters to clean up the code.