fix: log the detailed error message for mvn execution failures

[xieshenzh]

Description

Describe what you did and why.

When mvn command execution fails, add the output to the exception message.
So that, the command execution failure details can be found in the IDE (e.g. IntelliJ IDEA) logs, which helps users to troubleshoot the issues.

Related issue (if any): fixes #issue_number_goes_here

Checklist

• I have followed this repository's contributing guidelines.
• I will adhere to the project's code of conduct.

Additional information

Anything else?

[bmozaffa]

Thanks, Xieshen, LGTM!

@zvigrinberg I was testing the IntelliJ plugin and realized a maven issue was causing the report to fail, but the -q prevented any useful information from being surfaced. Please add your thoughts!

[zvigrinberg]

Hi @xieshenzh, @bmozaffa , LGTM, will be very helpful to troubleshoots potential problems with underlying maven commands invocations.

the key here is that stdout is going to a file, to be processed by the api, and in case it's empty, and there is an error, stderr is handled by your change and thrown to the caller and the client/user can see everything that happened and act accordingly..

@xieshenzh , please make sure that -

1. Before merging, Kindly go on my remarks, so the error message, containing the particular error message from maven , will be displayed best on all os/platforms.
2. I've introduced some bug fixes, so once you're done, kindly rebase your work on top of main branch, before merging.

Thanks for the efforts!