Allow customised s3manager.UploadInput

[linmaosong2018]

At the moment, when the lib calls s3manager.Uploader.Upload, it constructs a default parameter input *UploadInput:

parquet-go-source/s3/s3.go

Lines 305 to 309 in 88e6b03

	uploadParams := &s3manager.UploadInput{
	Bucket: aws.String(s.BucketName),
	Key: aws.String(s.Key),
	Body: s.pipeReader,
	}

This will suffice in most cases. However, this doesn't allow setting other upload options, e.g. SSEKMSKeyId

https://github.com/aws/aws-sdk-go/blob/80a52257588ca940087e586fcf38280fd1b3aab5/service/s3/s3manager/upload_input.go#L138

To allow more flexibility, how about using UploadInput here to replace both bucket and key?

parquet-go-source/s3/s3.go

Lines 69 to 73 in 88e6b03

	// NewS3FileWriter creates an S3 FileWriter, to be used with NewParquetWriter
	func NewS3FileWriter(
	ctx context.Context,
	bucket string,
	key string,