nfc reader

Nfc reader using a ```RC522``` and an ```ESP32 D1 mini``` with a couple of neopixel's ```ws2812```. Software I'm using is ```esphome```.

Example code. One light will pulsate while detecting a tag. Another light will shine with a different color for a different tag.

```yaml
esphome:
name: nfc-scanner
platform: ESP32
board: wemos_d1_mini32

platformio_options:
lib_deps: [email protected]

wifi:
ssid: "****"
password: "****"

# Enable Home Assistant API
api:

ota:

web_server:
port: 80

spi:
#sda: 5 # This pin is not used in the configuration but IS connected. Seems to
# be needed
clk_pin: 14
mosi_pin: 13
miso_pin: 12

rc522_spi:
cs_pin: GPIO15
reset_pin: 4

on_tag:
then:
- homeassistant.tag_scanned: !lambda 'return x;'

- light.turn_on:
id: partition_1
brightness: 50%
red: 50%
green: 70%
blue: 100%
- delay: 0.5s