Introduce a new API named WorkloadRebalancer to support rescheduling

[chaosi-zju]

What type of PR is this?

/kind api-change /kind feature

What this PR does / why we need it:

Introduce a new API named WorkloadRebalancer to support rescheduling

Which issue(s) this PR fixes:

Fixes part of #4840

Special notes for your reviewer:

DO NOT MERGE until the following PR have been merged:

• 4848

Does this PR introduce a user-facing change?:

Introduce a new API named WorkloadRebalancer to support rescheduling.

[chaosi-zju]

@XiShanYongYe-Chang @RainbowMango could you please take some time to help review it?

[codecov-commenter]

Codecov Report

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

Project coverage is 52.98%. Comparing base (aded7c0) to head (c600991). Report is 6 commits behind head on master.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #4841 +/- ## ========================================== - Coverage 52.99% 52.98% -0.01% ========================================== Files 250 250 Lines 20420 20421 +1 ========================================== - Hits 10821 10820 -1 - Misses 8880 8882 +2 Partials 719 719 ``` | [Flag](https://app.codecov.io/gh/karmada-io/karmada/pull/4841/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/4841/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io) | `52.98% <100.00%> (-0.01%)` | :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]

Please fix the comments and remove the ResourceBinding part as it's in #4848.

[chaosi-zju]

Please fix the comments and remove the ResourceBinding part as it's in #4848.

this PR should rebase after #4848 merged, the new introduced field in ResourceBinding is also useful in this PR.

[RainbowMango]

Please rebase and fix failing tests.

[chaosi-zju]

Please rebase and fix failing tests.

done, ready to review @RainbowMango @XiShanYongYe-Chang

I have finished testing this PR too.

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango

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[XiShanYongYe-Chang]

/lgtm