Add Melexis Contact-less Infrared Sensor - MLX90614 to Heltec V3 Sensor

variants/heltec_v3/platformio.ini

@@ -157,6 +157,7 @@ build_flags =
   -D ADMIN_PASSWORD='"password"'
   -D ENV_PIN_SDA=33
   -D ENV_PIN_SCL=34
+  -D ENV_INCLUDE_MLX90614=1
   -D DISPLAY_CLASS=SSD1306Display
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
@@ -166,6 +167,7 @@ build_src_filter = ${Heltec_lora32_v3.build_src_filter}
 lib_deps =
   ${Heltec_lora32_v3.lib_deps}
   ${esp32_ota.lib_deps}
+  adafruit/Adafruit MLX90614 Library @ ^2.1.5
 
 [env:Heltec_WSL3_repeater]
 extends = Heltec_lora32_v3