Merge pull request #6221 from Catrobat/codex/wiki-to-docs-import

[dmetzner]

docs: migrate GitHub wiki snapshot into /docs and update wiki links

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Your checklist for this pull request

Please review the contributing guidelines and wiki pages of this repository.

• Include the name and id of the Jira ticket in the PR’s title eg.: SHARE-666 The devils ticket
• Choose the proper base branch (develop)
• Confirm that the changes follow the project’s coding guidelines
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• Verify to commit no other files than the intentionally changed ones
• Include reasonable and readable tests verifying the added or changed behavior
• Verify that all tests are passing (CI), if not please state the test cases in the section below
• Perform a self-review of the changes
• Stick to the project’s git workflow (rebase and squash your commits)
• Verify that your changes do not have any conflicts with the base branch
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• Check that your pull request has been successfully deployed to https://web-test-1.catrob.at/

Additional Description

TODO: Add additional information that is not in your commit-message here

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (codex/wiki-to-docs-import@1ced489). Learn more about missing BASE report.

Additional details and impacted files

@@                     Coverage Diff                      @@
##             codex/wiki-to-docs-import    #6222   +/-   ##
============================================================
  Coverage                             ?   51.47%           
  Complexity                           ?     7962           
============================================================
  Files                                ?      732           
  Lines                                ?    25558           
  Branches                             ?        0           
============================================================
  Hits                                 ?    13156           
  Misses                               ?    12402           
  Partials                             ?        0           

Flag	Coverage Δ
behat	49.19% <ø> (?)
phpunit	10.37% <ø> (?)

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