BUG: conflict socket dir when multiple users on the same machine

[ChengjieLi28]

Check code requirements

• [x] tests added / passed (if needed)
• [x] Ensure all linting tests pass

[codecov[bot]]

Codecov Report

Merging #16 (0d5fd84) into main (3dc13a0) will decrease coverage by 0.01%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
- Coverage   90.98%   90.98%   -0.01%     
==========================================
  Files          42       42              
  Lines        3207     3205       -2     
  Branches      641      641              
==========================================
- Hits         2918     2916       -2     
  Misses        215      215              
  Partials       74       74              

Flag	Coverage Δ
unittests	90.82% <100.00%> (-0.01%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
python/xoscar/backends/communication/socket.py	96.74% <ø> (-0.05%)	:arrow_down:
python/xoscar/constants.py	100.00% <100.00%> (ø)

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