Voxl ESC driver update (#23022)

* Made Serial API open the UART in NON BLOCKING mode
* Updated voxl_esc driver to latest from ModalAI fork
* Ported voxl_esc driver over to new Serial UART API
* Removed voxl_esc serial abstraction since new Serial API is already a serial abstraction

platforms/common/include/px4_platform_common/Serial.hpp

@@ -55,6 +55,7 @@ public:
 	virtual ~Serial();
 
 	// Open sets up the port and gets it configured based on desired configuration
+	// The port is always opened in NON BLOCKING mode.
 	bool open();
 	bool isOpen() const;