[BUILD] Support copying custom jars to server jars in build/dist script

[bowenliang123]

Why are the changes needed?

In practical usage, we often maintain and have some custom dependency library JAR files for logging, authentication, advisors and etc that need to be packaged into the distribution package. This PR supports copying all JAR files from the path ./custom-server-jars to the 'jars' directory of the distribution, which helps automate the packaging process.

How was this patch tested?

• Add some test cases that check the changes thoroughly including negative and positive cases if possible

• Add screenshots for manual tests if appropriate

• Run test locally before make a pull request

Was this patch authored or co-authored using generative AI tooling?

No.

[pan3793]

This does not like a common practice, especially, why those jars are expected to exist in a folder before packaging? do you plan to track those jars by Git internally?

[bowenliang123]

This does not like a common practice, especially, why those jars are expected to exist in a folder before packaging? do you plan to track those jars by Git internally?

It is reasonable to use pre-built library jars for different purposes. Eg. JDBC drivers for authentication , custom server plugin, logger jars and etc.

[codecov-commenter]

Codecov Report

Merging #5646 (9913eb4) into master (85af9d9) will decrease coverage by 0.06%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #5646      +/-   ##
============================================
- Coverage     61.42%   61.36%   -0.06%     
  Complexity       23       23              
============================================
  Files           603      603              
  Lines         35634    35634              
  Branches       4873     4873              
============================================
- Hits          21887    21867      -20     
- Misses        11368    11385      +17     
- Partials       2379     2382       +3     

see 9 files with indirect coverage changes

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