Add PauseRegionByTable in lightning

[guoshouyan]

What problem does this PR solve?

related issue: #51143
I first added the config of pausePdSchedulerScope, it could have 2 values:

1. region-in-action, which only pause the region of the table that is currently importing
2. region-by-table, which pause all regions of the table that is currently importing
   I create a new method of local.StopRegionScheduling, which wraps all logic of pausing the region scheduling logic in lightning. Based on the coffin of pausePdSchedulerScope, will be called on different place

Issue Number: close #xxx

Problem Summary:

What changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

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[rleungx]

FYI, there are some updates on the PD side, see tikv/pd#7853.