payu support command to print modules and machine info.

[Qian-HuiChen]

Thanks to @CodeGat 's suggestion!

This PR creates a payu support command which prints out some system information for troubleshooting and support requests.

Example of usage:

$USER@gadi $ payu support
========================================
  Payu Version:      1.2.1+101.gd97ecfa.dirty
  Payu Path:         /scratch/$PROJECT/$USER/payu-training-venv/bin
  Python Version:    3.11.13
  Python Path:       /scratch/$PROJECT/$USER/payu-training-venv/bin/python3
  LOADEDMODULES:     pbs
  Machine Info:      Linux gadi-login-05.gadi.nci.org.au xxxxx.el8.nci.x86_64 x86_64 GNU/Linux
========================================

[codecov]

Codecov Report

❌ Patch coverage is 94.11765% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.88%. Comparing base (d97ecfa) to head (2de940f).

Files with missing lines	Patch %	Lines
payu/subcommands/support_cmd.py	94.11%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #710      +/-   ##
==========================================
+ Coverage   63.70%   63.88%   +0.18%     
==========================================
  Files          67       68       +1     
  Lines        5554     5588      +34     
==========================================
+ Hits         3538     3570      +32     
- Misses       2016     2018       +2     

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[aidanheerdegen]

I know I was the one who suggested uname, but there is a nice builtin python package for querying this information and more

https://docs.python.org/3.14/library/platform.html

Rather than suggest specific changes I thought I'd just point to it and let you have a look and decide if you wanted to use that to replace some of the code.

[Qian-HuiChen]

I know I was the one who suggested uname, but there is a nice builtin python package for querying this information and more

https://docs.python.org/3.14/library/platform.html

I can definitely do that. I was exploring the platform package this morning and used it to mimic the spack debug report.
I was not sure which is the best way to use. Platform package returns a more readable format. I initially thought it was my problem that the uname output looks like alien language 😂

[aidanheerdegen]

I was not sure which is the best way to use. Platform package returns a more readable format.

It is more standard, so it insulates the code from underlying changes in operating system implementation. So from that point alone it is probably worth doing. Plus it has nice functions to return python versions which doesn't require logic to parse and split.