App Loading via Loader (#1)

* app loading wip

* various improvements

irq/isr stuff is now working
lvgl locking where needed
hello world now uses proper mutex for app unlocking
etc?

* various improvements

* cmsis_esp improvements

* implement interrupts

components/furi/src/furi.c

@@ -0,0 +1,30 @@
+#include "furi.h"
+#include "app_manifest_registry.h"
+#include <string.h>
+
+#include <freertos/FreeRTOS.h>
+#include <freertos/queue.h>
+
+static bool scheduler_was_running = false;
+
+void furi_init() {
+    furi_assert(!furi_kernel_is_irq());
+
+    if (xTaskGetSchedulerState() == taskSCHEDULER_RUNNING) {
+        vTaskSuspendAll();
+        scheduler_was_running = true;
+    }
+
+    furi_record_init();
+
+    xTaskResumeAll();
+
+#if defined(__ARM_ARCH_7A__) && (__ARM_ARCH_7A__ == 0U)
+    /* Service Call interrupt might be configured before kernel start      */
+    /* and when its priority is lower or equal to BASEPRI, svc instruction */
+    /* causes a Hard Fault.                                                */
+    NVIC_SetPriority(SVCall_IRQn, 0U);
+#endif
+
+    app_manifest_registry_init();
+}