[feat] Expose the chunk config of consumer to the reader

[CrazyCollin]

Fixes #935

Motivation

Support expose the chunk config of consumer to the reader

Modifications

Add chunk config related filed in ReaderOptions struct.

Verifying this change

This change added tests and can be verified as follows:

• Added test for specified and default chunk options in reader.

Does this pull request potentially affect one of the following parts:

If yes was chosen, please highlight the changes

• Dependencies (does it add or upgrade a dependency): (yes / no)
• The public API: (yes / no)
• The schema: (yes / no / don't know)
• The default values of configurations: (yes / no)
• The wire protocol: (yes / no)

[CrazyCollin]

Hi, @RobertIndie @shibd ,can you review it for me when you are free, many thanks.

[RobertIndie]

Thanks for your PR. Please add some tests to verify this PR.

You can add a test to verify that the configuration of the reader can be fed into the internal consumer reader.pc.