Sort ssts by their first key when IngestSST in raftstore v2

[CalvinNeo]

What problem does this PR solve?

Issue Number: ref #4982 close #7720

Problem Summary:
update proxy to raftstore-proxy
Proxy PR:
Including:\nSubmodule contrib/tiflash-proxy 653568e1c3...bc0ebe45a0:

Sort if meet multiple cf files in one round of handle_ingest_sst (#339)
Add helper to examine SST file (#338)
diagnostic: fix index out of bounds error in sysinfo (#333)
Add debug utils for tablet snapshot (#331)
Support replace url with a host string (#337)
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What is changed and how it works?

Check List

Tests

• 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

None

[JaySon-Huang]

/hold

I see this PR is to sort the SSTs in one IngestSST command by their first key. This may not handle the situation that multiple SST files' key range could be overlap.

[CalvinNeo]

@JaySon-Huang There are multiple IngestSST requests in one RaftCmd, one IngestSST contains one sst file to be ingested.

It is confirmed that in one RaftCmd, sst ranges will not overlap, which means the following case won't happen

A [a..c)
B [b..d)

Overlap can happen in different Raft Cmds, like the following

A [a..b) 
B [b..c)
C [c..d]

The first Raft Cmd contains A/C, and the next one contains B

[JaySon-Huang]

/unhold

[JaySon-Huang]

/approve

[ti-chi-bot]

@JaySon-Huang: It seems you want to merge this PR, I will help you trigger all the tests:

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[CalvinNeo]

/merge

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: JaySon-Huang, lidezhu

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-07-05 08:37:45.137443056 +0000 UTC m=+193097.071076468: ☑️ agreed by lidezhu.
• 2023-07-05 11:10:24.753346103 +0000 UTC m=+202256.686979524: ☑️ agreed by JaySon-Huang.