Uploads a file to an existing bucket.
buckets
permissions: noneobjects
permissions: insert
final avatarFile = File('path/to/file');
final String path = await supabase.storage.from('avatars').upload(
'public/avatar1.png',
avatarFile,
fileOptions: const FileOptions(cacheControl: '3600', upsert: false),
);
final avatarFile = chosenFile.bytes;
final String path = await supabase.storage.from('avatars').uploadBinary(
'public/avatar1.png',
avatarFile,
fileOptions: const FileOptions(cacheControl: '3600', upsert: false),
);