Add 4 additional Aura LED colors introduced in R503 Pro Sensor

[subramanian-elavathur]

Describe the scope of your change

This PR adds a few more colors to the Aura LED on the R503 Pro Sensor. It adds 4 new constants to Adafruit_Fingerprint.h file.

See documentation screenshot below for reference:

https://uelectronics.com/wp-content/uploads/2022/06/R503-fingerprint-module-user-manual-V1.2.1.pdf (Page 31)

Describe any known limitations with your change

New colors are applicable to the latest R503 Pro sensor

Please run any tests or examples that can exercise your modified code

See video below showcasing the 4 new colors (Green, Yellow, Cyan, White) cycling through after the 3 original colors (Red, Blue, Purple).

IMG_5411.MOV

Sample Code

finger.LEDcontrol(FINGERPRINT_LED_ON, 1000, FINGERPRINT_LED_RED);
delay(1000);
finger.LEDcontrol(FINGERPRINT_LED_ON, 1000, FINGERPRINT_LED_BLUE);
delay(1000);
finger.LEDcontrol(FINGERPRINT_LED_ON, 1000, FINGERPRINT_LED_PURPLE);
delay(1000);
finger.LEDcontrol(FINGERPRINT_LED_ON, 1000, FINGERPRINT_LED_GREEN);
delay(1000);
finger.LEDcontrol(FINGERPRINT_LED_ON, 1000, FINGERPRINT_LED_YELLOW);
delay(1000);
finger.LEDcontrol(FINGERPRINT_LED_ON, 1000, FINGERPRINT_LED_CYAN);
delay(1000);
finger.LEDcontrol(FINGERPRINT_LED_ON, 1000, FINGERPRINT_LED_WHITE);
delay(1000);