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)

arch/stm32/stm32.ini

@@ -16,14 +16,17 @@ build_flags =
   ${arduino_base.build_flags}
   -flto
   -Isrc/platform/stm32wl -g
-  -DMESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR
-  -DMESHTASTIC_EXCLUDE_INPUTBROKER
-  -DMESHTASTIC_EXCLUDE_I2C
-  -DMESHTASTIC_EXCLUDE_POWERMON
-  -DMESHTASTIC_EXCLUDE_SCREEN
-  -DMESHTASTIC_EXCLUDE_MQTT
-  -DMESHTASTIC_EXCLUDE_BLUETOOTH
-  -DMESHTASTIC_EXCLUDE_GPS
+  -DMESHTASTIC_EXCLUDE_AUDIO=1
+  -DMESHTASTIC_EXCLUDE_ATAK=1 ; ATAK is quite big, disable it for big flash savings.
+  -DMESHTASTIC_EXCLUDE_INPUTBROKER=1
+  -DMESHTASTIC_EXCLUDE_POWERMON=1
+  -DMESHTASTIC_EXCLUDE_SCREEN=1
+  -DMESHTASTIC_EXCLUDE_MQTT=1
+  -DMESHTASTIC_EXCLUDE_BLUETOOTH=1
+  -DMESHTASTIC_EXCLUDE_GPS=1
+  -DMESHTASTIC_EXCLUDE_WIFI=1
+  -DMESHTASTIC_EXCLUDE_TZ=1 ; Exclude TZ to save some flash space.
+  -DPIO_FRAMEWORK_ARDUINO_NANOLIB_FLOAT_PRINTF ; This is REQUIRED for at least traceroute debug prints - without it the length ends up uninitialized.
   ;-DDEBUG_MUTE
   -fmerge-all-constants
   -ffunction-sections
@@ -39,9 +42,9 @@ debug_tool = stlink
 lib_deps =
   ${env.lib_deps}
   ${radiolib_base.lib_deps}
+
   # renovate: datasource=git-refs depName=caveman99-stm32-Crypto packageName=https://github.com/caveman99/Crypto gitBranch=main
   https://github.com/caveman99/Crypto/archive/eae9c768054118a9399690f8af202853d1ae8516.zip
 
 lib_ignore =
   mathertel/OneButton@2.6.1
-  Wire