feat: some extensions to kernel standard c library. Other minor

improvements and formats

kernel/tasks/locking.c

@@ -126,7 +126,9 @@ void mutex_free(mutex_t *mutex) {
 }
 
 spinlock_t *spinlock_create() {
-    return malloc(sizeof(spinlock_t));
+    spinlock_t *lock = malloc(sizeof(spinlock_t));
+    lock->lock = false;
+    return lock;
 }
 
 void spinlock_acquire(spinlock_t *spinlock) {