esp32/heltec_wifi_lora32_v2: Add HELTEC ESP32 WiFi LoRa 32 (V2)

Product page: https://heltec.org/project/wifi-lora-32/



Supported:
    - LED
    - PRG Button
    - OLED display

Unsupported:
    - LoRa

Tested with:
    - samples\hello_world
    - samples\basic\blinky
    - samples\basic\button
    - samples\boards\esp32\wifi_station
    - samples\subsys\display\lvgl

Signed-off-by: Alfredo Dal'Ava Junior <alfredo.junior@eldorado.org.br>