feat: enable prof features by default

[evenyag]

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 enables prof features by default. We already move prof APIs to behind /debug URL and don't expose them as part of public v1 API, so it should be safe to enable them by default.

We can revert this if there are other issues.

Checklist

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

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 45 lines in your changes missing coverage. Please review.

Project coverage is 84.16%. Comparing base (d168bde) to head (6983fb5).
Report is 9 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4815      +/-   ##
==========================================
- Coverage   84.43%   84.16%   -0.27%     
==========================================
  Files        1125     1124       -1     
  Lines      204866   204891      +25     
==========================================
- Hits       172970   172449     -521     
- Misses      31896    32442     +546     

[discord9]

CI says it can't compile on windows, maybe cfg gate windows for pprof?

[evenyag]

CI says it can't compile on windows, maybe cfg gate windows for pprof?

@discord9 I added a new crate and used the cfg gate to import pprof on Linux/macOS.