Tab5 camera + other stuff (#558)

* Tab5 camera + other stuff

Tab5 camera driver - SC2356
Custom SliderBox widget - slider with plus and minus buttons + value label and snapping
Rtc Time service + rtc api
Sdk release - only include drivers built for that specific target, eg: sc2356 driver is mipi / p4 only.
No more hardcoded manual sdk cmakelists
New function to find device by compatible string match. no more static cast bool wildness when trying to match a single device (like M5Stack PaperS3 for example)

* feedback + fixes

Fixed external app user data path.
fix(gui): block app teardown until onHide() completes, preventing ELF unload racing a still-running app
added camera device type and api

* drain the snake sssem

---------

Co-authored-by: Ken Van Hoeylandt <git@kenvanhoeylandt.net>

Devices/m5stack-tab5/m5stack,tab5.dts

@@ -13,6 +13,7 @@
 #include <bindings/ina226.h>
 #include <bindings/pi4ioe5v6408.h>
 #include <bindings/rx8130ce.h>
+#include <bindings/sc2356.h>
 
 / {
 	compatible = "root";
@@ -60,6 +61,11 @@
 			reg = <0x41>;
 			shunt-milliohms = <5>;
 		};
+
+		sc2356 {
+			compatible = "smartsens,sc2356";
+			reg = <0x36>;
+		};
 	};
 
 	port_a: grove0 {