Transition from Travis CI to github workflow

[franchuterivera]

• Added 4 cores to our run
• Added dist check from openml
• Updated other openml github checks to our use case

[codecov]

Codecov Report

Merging #1004 (d12720b) into development (a6018cd) will increase coverage by 0.06%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development    #1004      +/-   ##
===============================================
+ Coverage        85.22%   85.29%   +0.06%     
===============================================
  Files              131      125       -6     
  Lines             9889     9749     -140     
===============================================
- Hits              8428     8315     -113     
+ Misses            1461     1434      -27     

Impacted Files	Coverage Δ
...mponents/feature_preprocessing/nystroem_sampler.py	85.29% <0.00%> (-5.89%)	⬇️
...ature_preprocessing/select_rates_classification.py	85.91% <0.00%> (-1.41%)	⬇️
autosklearn/pipeline/classification.py	86.88% <0.00%> (-0.32%)	⬇️
autosklearn/pipeline/regression.py	94.68% <0.00%> (-0.12%)	⬇️
autosklearn/evaluation/util.py	100.00% <0.00%> (ø)
...arn/metalearning/metalearning/clustering/gmeans.py	0.00% <0.00%> (ø)
autosklearn/classification.py
autosklearn/metrics/__init__.py
autosklearn/constants.py
autosklearn/regression.py
... and 23 more

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[franchuterivera]

Only Docs failing (plus random error on delete non candidate models).

Previous Docs passed ok.