C++ conversions (#111)

* Remove version from artifact name
* Target C++ 20 and higher
* Use cpp string
* Better crash implementation
* String utils in cpp style
* Replace parameter methods with start() method
* MutexType to Mutex::Type
* Kernel c to cpp style
* Cleanup event flag
* More cpp conversions
* Test fixes
* Updated ideas docs

Documentation/ideas.md

@@ -1,4 +1,6 @@
 # TODOs
+- Gpio: Use Timer instead of Thread
+- I2cScannerThread: Use Timer instead of Thread
 - Bug: I2C Scanner is on M5Stack devices is broken
 - WiFi AP Connect app: add "Forget" option.
 - T-Deck Plus: Implement battery status