Merge "libsnapshot: fix warnings" into main

#include <filesystem>

#include <optional>

#include <thread>

#include <unordered_set>

#include <android-base/file.h>

#include <android-base/logging.h>

#include <android/snapshot/snapshot.pb.h>

#include <libsnapshot/snapshot_stats.h>

#include "device_info.h"

#include "libsnapshot_cow/parser_v2.h"

#include "partition_cow_creator.h"

#include "snapshot_metadata_updater.h"

#include "utility.h"