Implement ValueManager and ValueComposer (#183)

* Fix ValueManager implementation
* Implement ValueComposer
* Add constructor for ValueManager
* Add value-expanders.h to flipper_v2.h set
* Move COPY_COMPOSE body into a .c file
* Add test for ValueManager
* Add destructors for ValueMutex, ValueManager and ValueComposer
* Use destructors in tests
* Move composition logic into perform_compose()
* Add docs for perform_compose()
* Add test for ValueComposer
* Replace atomic_bool with bool as g++ compiler doesn't support C11 atomics
* Add Event type
* Add semaphore support to the local target
* Add test for Event
* Update input records and relevant examples
* Rename Event to AppEvent in the cc1101-workaround example
* Rename Event to AppEvent in the irda example
* Use Event in ValueComposer to wait for update request
* Add perform_compose_internal() function
* fix Event/AppEvent

Co-authored-by: aanper <mail@s3f.ru>

core/api-basic/event.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "cmsis_os.h"
+
+typedef struct {
+    osSemaphoreId_t semaphore_id;
+} Event;
+
+/*
+Creates Event.
+*/
+bool init_event(Event* event);
+
+/*
+Free resources allocated by `init_event`.
+This function doesn't free the memory occupied by `Event` itself.
+*/
+bool delete_event(Event* event);
+
+/*
+Signals the event.
+If the event is already in "signalled" state, nothing happens.
+*/
+void signal_event(Event* event);
+
+/*
+Waits until the event is signalled.
+*/
+void wait_event(Event* event);
+
+/*
+Waits with a timeout until the event is signalled.
+*/
+bool wait_event_with_timeout(Event* event, uint32_t timeout_ms);