TLDR-916 added contributing and support info into docs

Author: oksidgy

docs/source/contributing/check_documentation.rst

@@ -0,0 +1,20 @@
+.. _check_documentation:
+
+Check documentation
+-------------------
+
+1. To build automatic documentation, it is recommended to install the following dependencies:
+
+    .. code-block:: bash
+
+         pip install .[docs]
+
+2. Documentation files should be located in the `docs/ <https://github.com/ispras/dedoc/blob/master/docs>`_ directory,
+   which must contain the `docs/source/conf.py <https://github.com/ispras/dedoc/blob/master/docs/source/conf.py>`_ (build settings)
+   and `docs/source/index.rst <https://github.com/ispras/dedoc/blob/master/docs/source/index.rst>`_ (documentation main page) files.
+
+3. Build documentation into HTML pages is done as follows:
+
+    .. code-block:: bash
+
+         python -m sphinx -T -E -W -b html -d docs/_build/doctrees -D language=en docs/source docs/_build

docs/source/contributing/contributing.rst

@@ -0,0 +1,61 @@
+.. _contributing:
+
+Support and Contributing
+========================
+
+Support
+-------
+If you are stuck with a problem using Dedoc, please do get in touch at our `Issues <https://github.com/ispras/dedoc/issues>`_ (recommend)
+or `Dedoc Chat <https://t.me/dedoc_chat>`_. The developers are willing to help.
+
+You can save time by following this procedure when reporting a problem:
+
+    * Do try to solve the problem on your own first. Read the documentation, including using the search feature, index and reference documentation.
+
+    * Search the issue archives to see if someone else already had the same problem.
+
+    * Before writing, try to create a minimal example that reproduces the problem (with the api parameters and files you used).
+      You’ll get the fastest response if you can send just a handful of lines of code that show what isn’t working.
+
+
+Contributing Rules
+------------------
+
+    * To add new features to the project repository yourself, you should follow
+      the `general contributing rules of github <https://github.com/firstcontributions/first-contributions>`_.
+      In your Pull Request, set `develop` as the target branch.
+
+    * We recommend using `Pycharm IDE` and `virtualenv` package for development.
+
+    * It is strongly recommended to use in development those versions of libraries that are already used in the project.
+      Thus, it is necessary to avoid using an excessive number of libraries with the same functionality in the project.
+      This leads to the growth of the dedoc library image.
+
+    * We strongly recommend using the already used ML library `torch` in development. For example,
+      using `tensorflow` library instead of `torch` is justified only in case of extreme necessity.
+
+    * If you add new functionality to dedoc, be sure to add python `unitests` to test the added functionality
+      (you can add api tests in `tests/api_tests <https://github.com/ispras/dedoc/blob/master/tests/api_tests>`_,
+      you can add unit tests in `tests/unit_tests <https://github.com/ispras/dedoc/blob/master/tests/unit_tests>`_).
+      These tests are run automatically in the Continuous Integration pipeline.
+
+    * Before each commit, check the code style using the automatic checker using the `flake8` library.
+      Instructions for using flake8 are provided here :ref:using_flake8`.
+
+    * We recommend setting up pre-commit for convenience and speeding up development according to the instructions :ref:`using_precommit` .
+      This will run a style check of the changed code with each commit.
+
+    * In case of any change in the online documentation of the project (for example, when adding a new api parameter),
+      be sure to check locally that the changed documentation is successfully built and looks as expected.
+      Building online documentation using `sphinx` is described here :ref:`check_documentation`.
+
+.. toctree::
+   :maxdepth: 1
+
+   using_flake8
+   using_precommit
+   check_documentation
+
+
+
+

docs/source/contributing/using_flake8.rst

@@ -0,0 +1,19 @@
+.. _using_flake8:
+
+Using Flake8 (Linting)
+----------------------
+
+To check Python code for compliance with all style standards, you can use the automatic checking tool `flake8`.
+Flake8 checks code according to configuration file `.flake8 <https://github.com/ispras/dedoc/blob/master/.flake8>`_.
+
+    1. Install all requirements for `flake8` package:
+
+    .. code-block:: bash
+
+         pip3 install .[lint]
+
+    2. Run `flake8` package:
+
+    .. code-block:: bash
+
+         flake8 .

docs/source/contributing/using_precommit.rst

@@ -0,0 +1,28 @@
+.. _using_precommit:
+
+Using Pre-commit
+----------------
+
+In addition to running the style check yourself, it is possible to configure a `precommit-hook <https://pre-commit.com>`_,
+which will run the style check before committing (`git commit`). The `pre-commit` is configured in
+the `.pre-commit-config.yaml <https://github.com/ispras/dedoc/blob/master/.pre-commit-config.yaml>`_ configuration file.
+
+1. You will need to install the dependency `pre-commit` and set up the hook:
+
+    .. code-block:: bash
+
+        pip3 install pre-commit
+        pre-commit install
+
+2. Check the hook (or do `git commit`):
+
+    .. code-block:: bash
+
+        pre-commit run --all
+
+.. seealso::
+    If you want to commit without checking the tests, you need to add the option `--no-verify`
+
+    .. code-block:: bash
+
+        git commit -m "your message" --no-verify

docs/source/index.rst

@@ -282,7 +282,8 @@ This type of structure is configurable (see :ref:`using_patterns`).
 
 .. toctree::
    :maxdepth: 2
-   :caption: Notes
+   :caption: Development Notes
    :hidden:
 
+   contributing/contributing
    changelog