[Subtask] [Improvement][AQE][LocalOrder] Merge continuous ShuffleDataSegment into single one

[zuston]

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Describe the subtask

Currently, the LocalOrderSegmentSplitter will split the index file into multiple shuffleDataSegments. But the split scope is limited in the range of local order.

For example:
The blocks are as follow

block-a (taskId-1)
block-b (taskId-2)
block-c (taskId-1)
block-d (taskId-2)

When the reader want to get the range of taskIds: [1, 3), the strategy will return two shuffleDataSegments. But we'd better to merge them into single one to reduce the network interaction times, because they are continuous.

Parent issue

#137

Are you willing to submit PR?

• Yes I am willing to submit a PR!