[FL-2219, FL-2251] System, FuriCore, FuriHal: various bug fixes and improvements (#986)

* Replace irq shenanigans with critical section
* Power: halt system on power off instead of crash.
* Gui: properly handle input event on NULL current_view
* FuriHal: correct gpio configuration sequence
* FuriHal: cleanup uart initialization. Makefile: allow to disable thread support.
* Loader: improve locking, fix simultaneous app start crash, full command line args support for gui apps, more consistent insomnia
* Loader: correct spelling
* FuriHal: increase gpio configuration readability
* FuriHal: correct gpio configuration error when mode is GpioModeEventRiseFall
Co-authored-by: DrZlo13 <who.just.the.doctor@gmail.com>

firmware/targets/f7/furi_hal/furi_hal_os.c

@@ -115,11 +115,11 @@ void vPortSuppressTicksAndSleep(TickType_t expected_idle_ticks) {
     }
 
     // Stop IRQ handling, no one should disturb us till we finish
-    __disable_irq();
+    FURI_CRITICAL_ENTER();
 
     // Confirm OS that sleep is still possible
     if(eTaskConfirmSleepModeStatus() == eAbortSleep) {
-        __enable_irq();
+        FURI_CRITICAL_EXIT();
         return;
     }
 
@@ -136,7 +136,7 @@ void vPortSuppressTicksAndSleep(TickType_t expected_idle_ticks) {
     }
 
     // Reenable IRQ
-    __enable_irq();
+    FURI_CRITICAL_EXIT();
 }
 
 void vApplicationStackOverflowHook(TaskHandle_t xTask, char* pcTaskName) {