feat: http header with metrics

[shuiyisong]

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?

This pr is a follow-up of #3466.
Now that we have OutputMeta, we can easily bring metrics from execution level up to the HTTP interface and put them into HTTP header.
This pr covers basically every HTTP entry with read or write request, returning a HTTP header indicating the cost of the request.

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR does not require documentation updates.

[codecov]

Codecov Report

Attention: Patch coverage is 57.84314% with 86 lines in your changes are missing coverage. Please review.

Project coverage is 84.96%. Comparing base (393ea44) to head (0619a30).
Report is 1 commits behind head on main.

❗ Current head 0619a30 differs from pull request most recent head 13c1d71. Consider uploading reports for the commit 13c1d71 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3536      +/-   ##
==========================================
- Coverage   85.38%   84.96%   -0.43%     
==========================================
  Files         906      906              
  Lines      151023   151078      +55     
==========================================
- Hits       128952   128361     -591     
- Misses      22071    22717     +646     

[waynexia]

LGTM 🚀

[v0y4g3r]

LGTM

[tisonkun]

This seems a refactor rather than a chore ... What a big change set 🤣

[sunng87]

This is actually a feature 😹

[tisonkun]

Although we miss the chance to correct the commit message, let's change the PR title ...