Add Qwiic Keypad to scanner

Note: I added it's primary address 0x4B
as well as it's one alternate 0x4a by Solder jumper...

Again not sure as for QWiic_Button we (you) added the 0x6f which is default one, but it actually has 4 solder jumpers which gives it an address range of 0x60-0x6f

examples/Scanner/Scanner.ino

     case 0x47: Serial.print(F("PCA9685")); break;
     case 0x48: Serial.print(F("ADS1115,PN532,TMP102,LM75,PCF8591")); break;
     case 0x49: Serial.print(F("ADS1115,TSL2561,PCF8591")); break;
-    case 0x4A: Serial.print(F("ADS1115")); break;
-    case 0x4B: Serial.print(F("ADS1115,TMP102,BNO080")); break;
+    case 0x4A: Serial.print(F("ADS1115,Qwiic Keypad")); break;
+    case 0x4B: Serial.print(F("ADS1115,TMP102,BNO080,Qwiic Keypad")); break;
     case 0x50: Serial.print(F("EEPROM,FRAM")); break;
     case 0x51: Serial.print(F("EEPROM")); break;
     case 0x52: Serial.print(F("Nunchuk,EEPROM")); break;