test

Reorganize docs to prepare automatic pdf doc build (#50)

# Changes
- Reorganize docs so that a pdf version can be generated with pandoc
- Add a script to build this pdf
- Add a gh action to build and upload a pdf as an asset on tag creation

# Dependencies:

none


# Tests results

n.a.

# Developer Checklist:

- [x] Test: Changes are tested
- [x] Doc: Documentation has been updated 
- [x] Git: Informative git commit message(s)
- [x] Issue: If a related GitHub issue exists, linking is done

## Checklists for documentation

- [x] Grammar: the content is grammatically correct
      (spelling, grammar, formatting, US English is used)
- [x] Comprehensibility/Unambiguousness: the content is easy readable,
clear to understand
- [x] Correctness and consistency: the content is technically correct
and consistent,
      no contradictions, no double descriptions
- [x] Terminology: technical terms are clear and they are used correctly
and documented in the glossary
- [x] Level of detail: the content matches the detail level necessary
for the reviewed object

# Reviewer checklist:

- [x] Review: Changes are reviewed
- [x] Review: Tested by the reviewer

## Checklists for documentation

- [x] Grammar: the content is grammatically correct
      (spelling, grammar, formatting, US English is used)
- [x] Comprehensibility/Unambiguousness: the content is easy readable,
clear to understand
- [x] Correctness and consistency: the content is technically correct
and consistent,
      no contradictions, no double descriptions
- [x] Terminology: technical terms are clear and they are used correctly
and documented in the glossary
- [x] Level of detail: the content matches the detail level necessary
for the reviewed object

---------

Signed-off-by: Simone Weiss <simone.weiss@elektrobit.com>
Signed-off-by: simone-weiss <simone.weiss@elektrobit.com>
Co-authored-by: Thomas Irgang (thir820) <thomas.irgang@elekrobit.com>