[AMORO-2540] Report expiring snapshots event for Iceberg and mixed format

[XBaith]

Why are the changes needed?

Close #2540 .

Brief change log

• Report expire snapshots event to downstream listeners

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? (no)
• If yes, how is the feature documented? (not documented)

[codecov]

Codecov Report

Attention: Patch coverage is 74.33628% with 58 lines in your changes are missing coverage. Please review.

Project coverage is 32.61%. Comparing base (2808413) to head (f15c295).

Files	Patch %	Lines
...etease/arctic/server/events/MixedExpireEvents.java	73.68%	16 Missing and 4 partials ⚠️
...s/api/events/mixed/ExpireMixedSnapshotsResult.java	0.00%	7 Missing ⚠️
.../optimizing/maintainer/IcebergTableMaintainer.java	89.70%	4 Missing and 3 partials ⚠️
.../netease/arctic/server/utils/IcebergTableUtil.java	57.14%	6 Missing ⚠️
...netease/arctic/ams/api/events/ExpireOperation.java	0.00%	5 Missing ⚠️
.../ams/api/events/iceberg/ExpireSnapshotsResult.java	0.00%	5 Missing ⚠️
...ms/api/events/iceberg/RemoveOrphanFilesResult.java	0.00%	3 Missing ⚠️
...a/com/netease/arctic/ams/api/events/EventType.java	0.00%	2 Missing ⚠️
...ease/arctic/ams/api/events/IcebergReportEvent.java	0.00%	2 Missing ⚠️
...com/netease/arctic/ams/api/events/ExpireEvent.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2541      +/-   ##
============================================
+ Coverage     32.44%   32.61%   +0.16%     
- Complexity     4412     4433      +21     
============================================
  Files           590      596       +6     
  Lines         50055    50260     +205     
  Branches       6622     6640      +18     
============================================
+ Hits          16242    16391     +149     
- Misses        32533    32578      +45     
- Partials       1280     1291      +11     

Flag	Coverage Δ
core	30.71% <74.33%> (+0.18%)	⬆️
trino	50.93% <ø> (ø)

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[zhoujinsong]

@XBaith I left some comments. PTAL.

[majin1102]

Hi, thanks for this wonderful feature.

I wonder if you can somehow explain the motivation of this definition?

[XBaith]

I wonder if you can somehow explain the motivation of this definition?

The purpose is to report information about files that have been deleted after the expiration timestamp, such as the path to the file, so that downstream systems can monitor or utilize this information for appropriate operations. But after discussing with @zhoujinsong , I think the reported information should be as concise as possible, and also need to wait for the API to be refactored to handle it.