fix: export storageClientOptions type (#255)

Author: mandarini

src/index.ts

@@ -1,3 +1,4 @@
-export { StorageClient as StorageClient } from './StorageClient'
+export { StorageClient } from './StorageClient'
+export type { StorageClientOptions } from './StorageClient'
 export * from './lib/types'
 export * from './lib/errors'