[LORA] Add water counter sensor with example (#1941)

* Add water counter example

examples/LoraWaterCounter/platformio.ini

@@ -0,0 +1,36 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:ttgo-lora32-v1]
+platform = espressif32
+board = ttgo-lora32-v1
+framework = arduino
+lib_deps =
+    https://github.com/sandeepmistry/arduino-LoRa.git#f4a1d27
+    https://github.com/ThingPulse/esp8266-oled-ssd1306.git#f96fd6a
+monitor_speed = 115200
+
+[env:ttgo-lora32-v21]
+platform = espressif32
+board = ttgo-lora32-v21
+framework = arduino
+lib_deps =
+    https://github.com/sandeepmistry/arduino-LoRa.git#f4a1d27
+    https://github.com/ThingPulse/esp8266-oled-ssd1306.git#f96fd6a
+monitor_speed = 115200
+
+[env:heltec-wifi-lora-32]  ; Heltec ESP32 Board with SSD1306 display
+platform = espressif32
+board = heltec_wifi_lora_32
+framework = arduino
+lib_deps =
+    https://github.com/sandeepmistry/arduino-LoRa.git#f4a1d27
+    https://github.com/ThingPulse/esp8266-oled-ssd1306.git#f96fd6a
+monitor_speed = 115200