doc: add descriptions of our tooling box in ./utils

Initial started with the scripts for searx, filtron and morty installations.

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

docs/utils/filtron.sh.rst

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+
+.. _filtron.sh:
+
+====================
+``utils/filtron.sh``
+====================
+
+.. sidebar:: further reading
+
+   - :ref:`searx_filtron`
+
+.. _Go: https://golang.org/
+.. _filtron: https://github.com/asciimoo/filtron
+.. _filtron README: https://github.com/asciimoo/filtron/blob/master/README.md
+
+To simplify installation and maintenance of a filtron instance you can use the
+script :origin:`utils/filtron.sh`.  In most cases you will install filtron_
+simply by running the command:
+
+.. code::  bash
+
+   sudo -H ./utils/filtron.sh install all
+
+The script adds a ``${SERVICE_USER}`` (default:``filtron``) and installs filtron_
+into this user account:
+
+#. Create a separated user account (``filtron``).
+#. Download and install Go_ binary in users $HOME (``~filtron``).
+#. Install filtron with the package management of Go_ (``go get -v -u
+   github.com/asciimoo/filtron``)
+#. Setup a proper rule configuration :origin:`[ref]
+   <utils/templates/etc/filtron/rules.json>` (``/etc/filtron/rules.json``).
+#. Setup a systemd service unit :origin:`[ref]
+   <utils/templates/lib/systemd/system/filtron.service>`
+   (``/lib/systemd/system/filtron.service``).
+
+
+Overview
+========
+
+The ``--help`` output of the script is largely self-explanatory:
+
+.. program-output:: ../utils/filtron.sh --help
+

docs/utils/index.rst

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+
+.. _searx_utils:
+
+======================
+Tooling box ``utils/``
+======================
+
+In the folder :origin:`utils/` we maintain some tools useful for admins and
+developers.
+
+.. toctree::
+   :maxdepth: 1
+
+   searx.sh
+   filtron.sh
+   morty.sh
+
+.. hint::
+
+   ATM :ref:`filtron.sh` and :ref:`searx.sh` do supports only systemd init
+   process used by debian, ubuntu and many other dists.  If you have working
+   init.d files to start/stop services, please contribute / thanks!
+

docs/utils/morty.sh.rst

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+
+.. _morty.sh:
+
+.. _morty: https://github.com/asciimoo/morty
+.. _morty's README: https://github.com/asciimoo/morty
+
+==================
+``utils/morty.sh``
+==================
+
+To simplify installation and maintenance of a morty_ instance you can use the
+script :origin:`utils/morty.sh`.  In most cases you will install morty_ simply by
+running the command:
+
+.. code::  bash
+
+   sudo -H ./utils/morty.sh install all
+
+The script adds a ``${SERVICE_USER}`` (default:``morty``) and installs morty_
+into this user account.
+
+.. hint::
+
+   To add morty to your searx instance read chapter :reF:`searx_morty`.
+
+
+The ``--help`` output of the script is largely
+self-explanatory:
+
+.. program-output:: ../utils/morty.sh --help
+

docs/utils/searx.sh.rst

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+
+.. _searx.sh:
+
+==================
+``utils/searx.sh``
+==================
+
+To simplify installation and maintenance of a searx instance you can use the
+script :origin:`utils/searx.sh`.  In most cases you will install searx simply by
+running the command:
+
+.. code::  bash
+
+   sudo -H ./utils/searx.sh install all
+
+The script adds a ``${SERVICE_USER}`` (default:``searx``) and installs searx
+into this user account.  The ``--help`` output of the script is largely
+self-explanatory:
+
+.. program-output:: ../utils/searx.sh --help
+