Enable telemetry and I2C sensors on STM32WL (except accelerometers) (#7008)

* Update platformio inis for stm32 platform and wio-e5 variant for enabling i2c

* Don't reference timezone functions if MESHTASTIC_EXCLUDE_TZ is defined

* Use custom pow_of_two in RadioInterface instead of floating-point pow()

* First pass: enable sensors for STM32wL

* Fix AirQualityTelemetryModule being created if the PM25AQI header is missing

* Link in power sensor libraries

* more ini tweaks

* Add =1 to EXCLUDE defines, fix indentation.

* Drop HAS_WIRE in ini, it's defined in architecture.h

* Fix build when power sensor libraries are missing

Make MAX sensor integration into Power.cpp optional based on its library header existing.
Also make NullSensor expose a voltage and current sensor, because Power calls directly into these for INA sensors.
This lets us remove all the deps for the STM32WL platform.

* Change default I2C for RAK3172 to be I2C1, not I2C2

* Respect the laws of mathematics (oops)

variants/wio-e5/platformio.ini

@@ -8,20 +8,17 @@ build_flags =
   -DSERIAL_UART_INSTANCE=1
   -DPIN_SERIAL_RX=PB7
   -DPIN_SERIAL_TX=PB6
+  -DPIN_WIRE_SDA=PA15
+  -DPIN_WIRE_SCL=PB15
   -DHAL_DAC_MODULE_ONLY
   -DHAL_RNG_MODULE_ENABLED
   -DRADIOLIB_EXCLUDE_SX128X=1
   -DRADIOLIB_EXCLUDE_SX127X=1
   -DRADIOLIB_EXCLUDE_LR11X0=1
-  -DMESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR=1
-  -DMESHTASTIC_EXCLUDE_I2C=1
-  -DMESHTASTIC_EXCLUDE_WIFI=1
-  -DMESHTASTIC_EXCLUDE_BLUETOOTH=1
-  -DMESHTASTIC_EXCLUDE_GPS=1
-  -DMESHTASTIC_EXCLUDE_SCREEN=1
-  -DMESHTASTIC_EXCLUDE_MQTT=1
-  -DMESHTASTIC_EXCLUDE_POWERMON=1
-  ;-DPIO_FRAMEWORK_ARDUINO_NANOLIB_FLOAT_PRINTF
-  ;-DCFG_DEBUG
+  -DHAS_SENSOR
 
-upload_port = stlink
+upload_port = stlink
+
+lib_deps =
+  ${stm32_base.lib_deps}
+  # Add your custom sensor here!