Add support for ESP32-S3 PowerFeather (#8889)

* Add support for ESP32-S3 PowerFeather

* Replace GPIO_NUM_X with just the pin number

* Pattern powerfeather entries after generic s3 board

* Remove redefinitions, add pin aliases to pins_arduino.h

variants/esp32s3_powerfeather/pins_arduino.h

+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+
+#define USB_VID            0x303A
+#define USB_PID            0x81BB
+#define USB_MANUFACTURER   "PowerFeather"
+#define USB_PRODUCT        "ESP32-S3 PowerFeather"
+#define USB_SERIAL         ""
+
+static const uint8_t ALARM = 7;
+static const uint8_t INT =   5;
+
+static const uint8_t LED =   46;
+static const uint8_t BTN =   0;
+static const uint8_t EN =    13;
+
+static const uint8_t TX =    44;
+static const uint8_t RX =    42;
+static const uint8_t TX0 =   43;
+
+static const uint8_t SS =    -1;
+static const uint8_t MISO =  41;
+static const uint8_t MOSI =  40;
+static const uint8_t SCK =   39;
+
+static const uint8_t SCL =   36;
+static const uint8_t SDA =   35;
+
+static const uint8_t A0 =    10;
+static const uint8_t A1 =    9;
+static const uint8_t A2 =    8;
+static const uint8_t A3 =    3;
+static const uint8_t A4 =    2;
+static const uint8_t A5 =    1;
+
+static const uint8_t D5 =    15;
+static const uint8_t D6 =    16;
+static const uint8_t D9 =    17;
+static const uint8_t D10 =   18;
+static const uint8_t D11 =   45;
+static const uint8_t D12 =   12;
+static const uint8_t D13 =   11;
+
+#define LED_BUILTIN 46
+#define BUILTIN_LED  LED_BUILTIN // backward compatibility
+
+#endif /* Pins_Arduino_h */