feat(uart): Add UART signal inversion functions

Added functions for UART signal inversion and updated existing function signatures.

Author: SuGlider

cores/esp32/esp32-hal-uart.h

@@ -61,8 +61,14 @@ void uartFlushTxOnly(uart_t *uart, bool txOnly);
 bool uartSetBaudRate(uart_t *uart, uint32_t baud_rate);
 uint32_t uartGetBaudRate(uart_t *uart);
 
-void uartSetRxInvert(uart_t *uart, bool invert);
-void uartSetTxInvert(uart_t *uart, bool invert);
+// Helper generic function that takes a uart_sigenl_inv_t mask to be properly applied to the designated uart pin
+// invMask can be UART_SIGNAL_RXD_INV, UART_SIGNAL_TXD_INV, UART_SIGNAL_RTS_INV, UART_SIGNAL_CTS_INV
+// returns the operation success status
+bool uartPinSignalInversion(uart_t *uart, uint32_t invMask, bool inverted);
+bool uartSetRxInvert(uart_t *uart, bool invert);
+bool uartSetTxInvert(uart_t *uart, bool invert);
+bool uartSetCtsInvert(uart_t *uart, bool invert);
+bool uartSetRtsInvert(uart_t *uart, bool invert);
 bool uartSetRxTimeout(uart_t *uart, uint8_t numSymbTimeout);
 bool uartSetRxFIFOFull(uart_t *uart, uint8_t numBytesFIFOFull);
 void uartSetFastReading(uart_t *uart);