Add __matchers__ to default dunders

[frebib]

Required for saltstack/salt#64607

[codecov]

Codecov Report

Merging #150 (9e70e28) into master (ee81b0e) will not change coverage.
Report is 1 commits behind head on master.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #150   +/-   ##
=======================================
  Coverage   85.01%   85.01%           
=======================================
  Files          96       96           
  Lines        5767     5767           
  Branches      616      616           
=======================================
  Hits         4902     4902           
  Misses        692      692           
  Partials      173      173           

Flag	Coverage Δ
Linux	84.45% <ø> (ø)
Windows	77.87% <ø> (ø)
macOS	78.24% <ø> (ø)
py3.10	84.59% <ø> (ø)
py3.7	83.74% <ø> (ø)
py3.8	84.59% <ø> (ø)
py3.9	84.68% <ø> (ø)
pytest-7.3.0	84.66% <ø> (ø)
pytest-7.4.0	84.66% <ø> (ø)
salt-3005.0	84.43% <ø> (ø)
salt-3006.0	84.64% <ø> (ø)
src	76.93% <ø> (ø)
tests	96.61% <ø> (ø)

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Files Changed	Coverage
src/saltfactories/utils/loader.py	ø