file-storage v0.5.0

• Add fileStorage.put(key, file) method as a convenience around fileStorage.set(key, file) + fileStorage.get(key), which is a very common pattern when you need immediate access to the file you just put in storage

// before
await fileStorage.set(key, file);
let newFile = await fileStorage.get(key)!;

// after
let newFile = await fileStorage.put(key, file);