[AMORO-2438] Mixed Format KeyedTable support bin-packing splitting optimizing tasks

[wangtaohz]

Why are the changes needed?

Close #2438 .

Brief change log

• fix cost calculation when optimizing planning
• split tasks by bin-packing in a tree node

How was this patch tested?

• [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

• [ ] Add screenshots for manual tests if appropriate

• [ ] Run test locally before making a pull request

Documentation

• Does this pull request introduce a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)