[TASK] Improve local ddev setup handling - first round

[sbuerk]

• [TASK] Introduce local patch contribution package/extension
  To make contribution and workin on EXT:deepltranslate_core easier,
  the provided ddev based local environment should be improved with
  the ability to setup a basic working environment easily.

  This change introduces a local development extension EXT:contribution
  as preparation to give at least a simple and easy setup of a running
  TYPO3 instance based on the TYPO3 EXT:styleguide core extension to
  generate a backend and frontend tree / data. Combined with the TYPO3
  v12 setup command this allows a simple instance generation.

  For the start, the contribution extension only provide a cli command
  to manage site root visibilities (on/off) having EXT:styleguide
  generated trees in mind.

• [TASK] Add EXT:styleguide and EXT:contribution as development dependencies
  To improve the extension contribution experience with the
  provided ddev setup two additional development dependencies
  are added:

  • EXT:styleguide: TYPO3 Core development extension which
    provides a generator for TCA and FRONTEND page trees.
  • EXT:contribution: Local path extension providing some
    helper arround the contribution/working experience for
    the ddev instance.

  composer config sort-packages true
  composer config repositories.local path "packages/*"
  composer require --dev \
    "typo3/cms-styleguide":"^12.0.5" \
    "web-vision/contribution":"@dev"
  

  composer2-81 config sort-packages true
  composer2-81 config repositories.local path "packages/*"
  composer2-81 require --dev
  "typo3/cms-styleguide":"^12.0.5"
  "web-vision/contribution":"@dev"

• [TASK] Add ddev-setup-instance composer script
  This change adds the composer script ddev:setup-instance,
  which setupts the TYPO3 instance for ddev, generates the
  EXT:styleguide trees and activates the frontend site.