*: share etcd client from domain for autoid allocator (#46647)

[ti-chi-bot]

This is an automated cherry-pick of #46647

What problem does this PR solve?

Issue Number: close #46324

Problem Summary:

The autoid allocate service need a etcd client, we can create one and close it after use.
But every time infoschema reload, we need to create one...
A better solution is to share the etcd client in domain.Domain (also ddl.DDL)

What is changed and how it works?

Refactor the auto id parameter from kv.Store to autoid.Requirement
The autoid.Requirement now consists of a kv.Store and a clientv3.Client...
This change affect quite a lot packages, especially tools packages.

Check List

Tests

This is a code refactor so all the old tests should not be break.

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

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

[tiancaiamao]

This cherry-pick also contains the changes from #48870
Because the master branch differs too much from this branch, the resolve conflict process is painful.
If I cherry-pick and merge the one by one, I have to resolve conflict twice, that would be painful x2

[tiancaiamao]

/test unit-test

[tiprow]

@tiancaiamao: No presubmit jobs available for pingcap/[email protected]

In response to this:

/test unit-test

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-6.5@5a6b36c). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lcwangchao, tangenta

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Needs approval from an approver in each of these files:

• OWNERS [lcwangchao,tangenta]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-27 01:50:28.960705909 +0000 UTC m=+801057.625932104: ☑️ agreed by lcwangchao.
• 2023-11-27 02:54:15.184914349 +0000 UTC m=+804883.850140544: ☑️ agreed by tangenta.