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branch-3.0: [feature](load) new insgestion load #45937 #46079

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Cherry-picked from #45937

@gnehil
[feature](load) new insgestion load (#45937)
1b82476 
### What problem does this PR solve?


Problem Summary:

Ingestion Load is used to load pre-processed data into doris.

Preprocessing refers to writing the result data to an external storage
system after the data is processed according to the partitioning,
bucketing and aggregation methods defined by the doris table.

The preprocessing is completed by the external system, and then the BE
reads the data and converts it into segment files and saves it.

The basic flow is as follows:

![ingestion_load](https://github.com/apache/doris/assets/30104232/aa468cd4-90bf-4d9d-b69b-0425b66b15f4)


### Release note
[feature](load) new insgestion load
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Thearas commented Dec 27, 2024

Thank you for your contribution to Apache Doris.
Don't know what should be done next? See How to process your PR.

Please clearly describe your PR:

  1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
  2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
  3. What features were added. Why was this function added?
  4. Which code was refactored and why was this part of the code refactored?
  5. Which functions were optimized and what is the difference before and after the optimization?

@dataroaring dataroaring reopened this Dec 27, 2024
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Thearas commented Dec 27, 2024

run buildall

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3 participants
@Thearas @dataroaring @gnehil