Create actions for release 0.4.0 (#170)

Transfer pydpf-core azure pipelines to git actions.
2 jobs:

unit testing, doc testing on windows and wheel publication for release
build doc and publish do for release
TO DO: add unit testing on Linux, add server backward compatibility job, run unit test under tests/slow, run distributed examples in documentation

Author: cbellot000

.ci/azure-pipelines.yml

@@ -1,5 +1,5 @@
 set SPHINX_APIDOC_OPTIONS=inherited-members
-call sphinx-apidoc -o ../docs/source/api ../ansys ../ansys/dpf/core/aeneid.py -f --implicit-namespaces --separate  --no-headings
+call sphinx-apidoc -o ../docs/source/api ../ansys -f --implicit-namespaces --separate  --no-headings
 pushd .
 cd ../docs/
 call make clean