compress/: support creating a single archive instead of several compressed files

[lichunzhu]

Feature Request

Is your feature request related to a problem? Please describe:

When dumpling dumps with --compress gzip parameter, dumpling will dump several compressed files. Here is an example:

$ ls export-20201219-200357/
metadata  test-schema-create.sql.gz  test.t-schema.sql.gz  test.t.sql.gz

This behavior is similar to mydumper.

Describe the feature you'd like:

Dumpling can compress these files into one archive. Here is an example:

export-20201219-200357.tar.gz

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Optimization:

[kennytm]

you can't write to a tar in parallel, so you still need an intermediate storage to store the incomplete files and write them to the tar.gz in a single thread.