Add read_stb method for TCPIP HiSLIP client.

[ckutlu]

This PR adds a read_stb method to the TCPIPInstrHiSLIP class, emulating the viReadSTB function.

I recently stumbled on this issue when I tried to call resource.read_stb() using a resource created with a HiSLIP connection. I realized this was due to a missing method in the TCPIPInstrHiSLIP class, so I went ahead and implemented it. Quick trip to IVI-6.1 Rev 2.0 section 6.14 (which I found here) revealed that I can use hislip.Instrument.async_status_query for that.

Let me know if this is acceptable, and if there is anything I can do to make it work for you. Cheers!

• Closes # (insert issue number if relevant)
• Executed black . && isort -c . && flake8 with no errors (Checked ruff, no changes were suggested)
• The change is fully covered by automated unit tests
• Documented in docs/ as appropriate
• Added an entry to the CHANGES file

[ckutlu]

@MatthieuDartiailh is there anything I can do to help move this PR?

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 4 lines in your changes missing coverage. Please review.

Project coverage is 24.48%. Comparing base (0367dc6) to head (0bb2c19).
Report is 3 commits behind head on main.

❗ Current head 0bb2c19 differs from pull request most recent head f765907

Please upload reports for the commit f765907 to get more accurate results.

Files	Patch %	Lines
pyvisa_py/tcpip.py	33.33%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #429      +/-   ##
==========================================
- Coverage   24.81%   24.48%   -0.34%     
==========================================
  Files          25       23       -2     
  Lines        3502     3488      -14     
  Branches      485      485              
==========================================
- Hits          869      854      -15     
- Misses       2616     2617       +1     
  Partials       17       17              

Flag	Coverage Δ
unittests	24.48% <33.33%> (-0.34%)	⬇️

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[MatthieuDartiailh]

Could you add an entry to changelog ? I will merge quickly once it is done. Sorry for the slow response

[ckutlu]

No worries at all, and done! Many thanks @MatthieuDartiailh :)