*: support the vector index

[zimulala]

What problem does this PR solve?

Issue Number: ref #55693

Problem Summary:
Merge https://github.com/pingcap/tidb/tree/feature/vector-index to the master branch.

• support vector index at the parser, parser, ddl: support vector index at the parser #55698
• executor: Provide TIFLASH_INDEXES table, executor: Provide TIFLASH_INDEXES table #55901
• support for adding/dropping vector index, *: support for adding/dropping vector index | tidb-test=723d2370f1b3956d22a5ab87b1fc8b9b864ca051 #55839
• support create table with vector indexes and others, *: support create table with vector indexes and others | tidb-test=c567cde7e19a55a67960a404906cb859ca44f206 #56124

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.

Support the vector index

[tiprow]

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[codecov]

Codecov Report

Attention: Patch coverage is 73.43533% with 191 lines in your changes missing coverage. Please review.

Project coverage is 76.1781%. Comparing base (762a6f2) to head (1b2f01a).
Report is 3 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #56409        +/-   ##
================================================
+ Coverage   73.3948%   76.1781%   +2.7832%     
================================================
  Files          1623       1645        +22     
  Lines        447233     457093      +9860     
================================================
+ Hits         328246     348205     +19959     
+ Misses        98892      87328     -11564     
- Partials      20095      21560      +1465     

Flag	Coverage Δ
integration	51.9507% <25.4335%> (?)
unit	72.5619% <71.6272%> (+0.0816%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.9478% <ø> (ø)
parser	∅ <ø> (∅)
br	63.0613% <ø> (+17.5141%)	⬆️

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-29 09:09:57.767863894 +0000 UTC m=+173153.188076906: ☑️ agreed by wjhuang2016.
• 2024-09-29 10:16:32.618809474 +0000 UTC m=+177148.039022486: ☑️ agreed by AilinKid.

[tangenta]

Rest LGTM

[yudongusa]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AilinKid, tangenta, wjhuang2016, yudongusa

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