support list server configs by admin cli tool

[bowenliang123]

:mag: Description

Issue References 🔗

This pull request fixes #

Describe Your Solution 🔧

• add command list config in admin cli tool , for listing all the server configs, which is useful for checking runtime configs when before/after refreshing the configs of user-defaults or non-user-defaults

Types of changes :bookmark:

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Test Plan 🧪

Behavior Without This Pull Request :coffin:

Behavior With This Pull Request :tada:

Related Unit Tests

---

Checklist 📝

• [ ] This patch was not authored or co-authored using Generative Tooling

Be nice. Be informative.

[codecov-commenter]

Codecov Report

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

Project coverage is 0.00%. Comparing base (8056235) to head (1c1d58d). Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
...g/apache/kyuubi/client/api/v1/dto/ConfigEntry.java	0.00%	17 Missing :warning:
...e/kyuubi/ctl/cmd/list/AdminListConfigCommand.scala	0.00%	7 Missing :warning:
...rg/apache/kyuubi/server/api/v1/AdminResource.scala	0.00%	6 Missing :warning:
...in/java/org/apache/kyuubi/client/AdminRestApi.java	0.00%	5 Missing :warning:
...main/scala/org/apache/kyuubi/ctl/util/Render.scala	0.00%	4 Missing :warning:
...in/scala/org/apache/kyuubi/config/KyuubiConf.scala	0.00%	3 Missing :warning:
...a/org/apache/kyuubi/ctl/opt/AdminCommandLine.scala	0.00%	2 Missing :warning:
...ache/kyuubi/ctl/cli/AdminControlCliArguments.scala	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #6702 +/- ## ====================================== Coverage 0.00% 0.00% ====================================== Files 684 686 +2 Lines 42279 42324 +45 Branches 5765 5770 +5 ====================================== - Misses 42279 42324 +45 ``` | [Flag](https://app.codecov.io/gh/apache/kyuubi/pull/6702/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache) | Coverage Δ | | |---|---|---| | [](https://app.codecov.io/gh/apache/kyuubi/pull/6702/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache) | `0.00% <0.00%> (?)` | | 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=apache#carryforward-flags-in-the-pull-request-comment) to find out more.

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[pan3793]

listing configurations should be restricted to admin only. additionally, we may need to have another parameter to define the display mode for configuration values, e.g.

• ALL - display all configuration values as-is
• REDACTED - to avoid displaying password/secret values

PS: I remember there was a similar request to have a configuration display mode of configurations for retrieving batch info