[AMORO-4208] Refactor orphan-files-cleaning via ProcessFactory plugin

[zhangwl9]

Why are the changes needed?

Close #4208.

Brief change log

Refactor Iceberg orphanFiles cleaning from the inline scheduler into a pluggable process model (ProcessFactory + ExecuteEngine) refer to #4107 :

Implementation Plan

1. Create OrphanFilesCleaningProcess

   • Implement TableProcess and LocalProcess interfaces
   • Add to IcebergProcessFactory with proper trigger strategy
   • Support configuration: clean-orphan-files.enabled and clean-orphan-files.interval

2. Remove standalone scheduler

   • Delete OrphanFilesCleaningExecutor from InlineTableExecutors
   • Remove registration from AmoroServiceContainer

3. Add configuration options

   • clean-orphan-files.enabled (default: true)
   • clean-orphan-files.interval (default: 1 day)
   • Configure via process-factories.yaml plugin config

4. Enhance state tracking

   • Use TableRuntimeCleanupState to track last orphan files clean time

5. Update execution engine config

   • Add pool.orphan-files-cleaning.thread-count to execute-engines.yaml

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)

[zhangwl9]

@baiyangtx @xxubai Could you help me review it when you are free? Thanks.