add pprof option to metrics-adapter

[chaosi-zju]

What type of PR is this?

/kind feature

What this PR does / why we need it:

add pprof option to metrics-adapter.

refer to Profiling Karmada.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

`karmada-metrics-adapter`: Introduced the `--profiling` and `--profiling-bind-address` flags to enable and control profiling.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 51.76%. Comparing base (dca5c1a) to head (2bfaccf). Report is 37 commits behind head on master.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #4786 +/- ## ========================================== - Coverage 51.77% 51.76% -0.02% ========================================== Files 250 250 Lines 25000 24980 -20 ========================================== - Hits 12944 12931 -13 + Misses 11346 11340 -6 + Partials 710 709 -1 ``` | [Flag](https://app.codecov.io/gh/karmada-io/karmada/pull/4786/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/karmada-io/karmada/pull/4786/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io) | `51.76% <ø> (-0.02%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io#carryforward-flags-in-the-pull-request-comment) to find out more.

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[RainbowMango]

/lgtm /assign @chaunceyjiang

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chaunceyjiang

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Needs approval from an approver in each of these files: - ~~[cmd/metrics-adapter/OWNERS](https://github.com/karmada-io/karmada/blob/master/cmd/metrics-adapter/OWNERS)~~ [chaunceyjiang] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[RainbowMango]

Just added a release note to the PR description. cc @chaosi-zju

[RainbowMango]

Why the --profiling is enabled by default? I remember it should be disabled by default.

      --profiling                                                                                                                                                                                   
                Enable profiling via web interface host:port/debug/pprof/ (default true)
      --profiling-bind-address string                                                                                                                                                               
                The TCP address for serving profiling(e.g. 127.0.0.1:6060, :6060). This is only applicable if profiling is enabled. (default ":6060")