feat: extract hints from http header

[fengjiachun]

I hereby agree to the terms of the GreptimeDB CLA.

Refer to a related PR or issue link (optional)

What's changed and what's your intention?

As the title, and close #5043

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR requires documentation updates.

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[codecov]

Codecov Report

Attention: Patch coverage is 96.96970% with 4 lines in your changes missing coverage. Please review.

Project coverage is 83.80%. Comparing base (903da8f) to head (f7b3b46).
Report is 50 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5128      +/-   ##
==========================================
- Coverage   84.06%   83.80%   -0.27%     
==========================================
  Files        1167     1177      +10     
  Lines      217365   219211    +1846     
==========================================
+ Hits       182723   183699     +976     
- Misses      34642    35512     +870     

[shuiyisong]

LGTM

[v0y4g3r]

LGTM