Cleanup and fixes

-Added RAK_4631 define back
-Added includes for common RAK sensors that are currently supported in ESM
-Set global variables to static
-Reduced delay time within the RAK gps init sequence

variants/rak4631/platformio.ini

@@ -5,6 +5,7 @@ board = wiscore_rak4631
 board_check = true
 build_flags = ${nrf52_base.build_flags}
   -I variants/rak4631
+  -D RAK_4631
   -D RAK_BOARD
   -D PIN_BOARD_SCL=14
   -D PIN_BOARD_SDA=13
@@ -18,6 +19,9 @@ build_flags = ${nrf52_base.build_flags}
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
   -D ENV_INCLUDE_GPS=1
+  -D ENV_INCLUDE_SHTC3=1
+  -D ENV_INCLUDE_LPS22HB=1
+  -D ENV_INCLUDE_INA219=1
 build_src_filter = ${nrf52_base.build_src_filter}
   +<../variants/rak4631>
   +<helpers/sensors> 
@@ -25,7 +29,10 @@ lib_deps =
   ${nrf52_base.lib_deps}
   adafruit/Adafruit SSD1306 @ ^2.5.13
   stevemarple/MicroNMEA @ ^2.0.6
-  sparkfun/SparkFun u-blox GNSS Arduino Library @ ^2.2.27
+  adafruit/Adafruit SHTC3 Library@^1.0.1
+  arduino-libraries/Arduino_LPS22HB@^1.0.2
+  adafruit/Adafruit INA219@^1.2.3
+  sparkfun/SparkFun u-blox GNSS Arduino Library@^2.2.27
 
 [env:RAK_4631_Repeater]
 extends = rak4631