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.c

@@ -0,0 +1,24 @@
+#include "event.h"
+#include <string.h>
+
+bool init_event(Event* event) {
+    event->semaphore_id = osSemaphoreNew(1, 0, NULL);
+    return event->semaphore_id != NULL;
+}
+
+bool delete_event(Event* event) {
+    return osSemaphoreDelete(event->semaphore_id) == osOK;
+}
+
+void signal_event(Event* event) {
+    // Ignore the result, as we do not care about repeated event signalling.
+    osSemaphoreRelease(event->semaphore_id);
+}
+
+void wait_event(Event* event) {
+    wait_event_with_timeout(event, osWaitForever);
+}
+
+bool wait_event_with_timeout(Event* event, uint32_t timeout_ms) {
+    return osSemaphoreAcquire(event->semaphore_id, timeout_ms) == osOK;
+}