[HUDI-7386] add builder to filegroup reader

[jonvex]

Change Logs

Add builder so we can have more params

Impact

Mistakes will be made when there are so many params for the fg reader.

Risk level (write none, low medium or high below)

low

Documentation Update

N/A

Contributor's checklist

• [ ] Read through contributor's guide
• [ ] Change Logs and Impact were stated clearly
• [ ] Adequate tests were added if applicable
• [ ] CI passed

[hudi-bot]

CI report:

• 088e3908a60f92efdd0f4ea4862b66e3cf581856 Azure: SUCCESS

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