add orderer plugin

[tsv1]

No description provided.

[codecov-commenter]

Codecov Report

Merging #37 (525bb43) into master (7e99f1d) will increase coverage by 0.10%.
The diff coverage is 98.33%.

@@            Coverage Diff             @@
##           master      #37      +/-   ##
==========================================
+ Coverage   93.70%   93.80%   +0.10%     
==========================================
  Files          96      101       +5     
  Lines        2256     2310      +54     
  Branches      339      347       +8     
==========================================
+ Hits         2114     2167      +53     
- Misses        128      129       +1     
  Partials       14       14              

Impacted Files	Coverage Δ
.../core/_scenario_orderer/_plain_scenario_orderer.py	85.71% <85.71%> (ø)
vedro/_config.py	94.82% <100.00%> (+0.09%)	⬆️
vedro/core/__init__.py	100.00% <100.00%> (ø)
vedro/core/_scenario_orderer/__init__.py	100.00% <100.00%> (ø)
vedro/plugins/orderer/__init__.py	100.00% <100.00%> (ø)
vedro/plugins/orderer/orderer_plugin.py	100.00% <100.00%> (ø)
vedro/plugins/orderer/random_orderer.py	100.00% <100.00%> (ø)
vedro/plugins/orderer/reversed_orderer.py	100.00% <100.00%> (ø)
vedro/plugins/orderer/stable_orderer.py	100.00% <100.00%> (ø)

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