Hardware Monitoring Sysfs interface

[JuanPedroGHM]

Introduces a new backend to get data out of the hwmon sysfs interface.

Heavily inspired by jpwr

• Add JSC Acknowledgments

[codecov]

Codecov Report

❌ Patch coverage is 46.09375% with 69 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.08%. Comparing base (ef56ec7) to head (f353052).

Files with missing lines	Patch %	Lines
perun/backend/hwmon_grace.py	42.85%	56 Missing ⚠️
perun/backend/psutil.py	33.33%	12 Missing ⚠️
perun/processing.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #186      +/-   ##
==========================================
- Coverage   64.51%   62.08%   -2.43%     
==========================================
  Files          32       33       +1     
  Lines        2691     2804     +113     
==========================================
+ Hits         1736     1741       +5     
- Misses        955     1063     +108     

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