Added Sphinx based documentation.

(cherry picked from commit f9f5dd5117a14ba31a3a9113a1de2c12c624dffb)

doc/JobTemplate/CoverageCollection.rst

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+CoverageCollection
+##################
+
+collect code coverage data (incl. branch coverage)
+    with `pytest`/`pytest-cov`/`coverage.py` using a single version of Python (latest). It generates HTML and Cobertura
+    (XML)reports, upload the HTML report as an artifact, and upload the test results to Codecov and Codacy. Configuration
+    options to `pytest` and `coverage.py` should be given via section `[tool.pytest.ini_options]` and `[tool.coverage.*]`
+    in a `pyproject.toml` file.
+
+Instantiation
+*************
+
+Simple Example
+==============
+
+.. code-block:: yaml
+
+   TBD
+
+Complex Example
+===============
+
+
+
+.. code-block:: yaml
+
+   TBD
+
+Template Parameters
+*******************
+
+TBD 1
+=====
+
+TBD
+
+TBD 1
+=====
+
+TBD
+
+Template Results
+****************
+
+*None*