docs: Autodoc generation/preperation

[stephanbcbauer]

Why

Since various properties in the different modules/extensions change or are added due to new functionality, it takes more time to document these manually at present. However, the description of the properties is necessary for developers and users of the EDC so that it can be configured and understood correctly.

Automatic generation of documentation is required for this purpose.

Note: @paullatzelsperger has already started with a poc, with the following functionality -> please contact him if you have further questions.

• modules and dependencies are parsed recursive
• in each file the parser loos for specific annotations which describe a property (description, default value…)
• the information is extracted in a json file
• the json file is transformed to a md file like this (just an example)
  tractusx-edc.md

What

• Check the current status with @paullatzelsperger
• Define a process for using this tools within a github workflow and generate the file automaticly
• Document the process
• Adapt the sourcecode (tractusx-edc) and add the needed annotations wherever it is needed and usefull

[ndr-brt]

Currently the autodoc misses to render the defaultValue attribute: eclipse-edc/GradlePlugins#184