[TASK] Update "Creating content" screenshots

[brotkrueml]

Previously, this screenshost have been generated automatically. But as the Screenshot Tool is not working anymore in newer TYPO3 versions, the images have been moved to the "ManualScreenshots" folder.

Releases: main, 12.4

[brotkrueml]

@aksenovaa Please have a look, the alt text and the caption of images is now added. You can translate them to Russian when this PR has been merged.

[github-actions]

The backport to 12.4 failed:

The process '/usr/bin/git' failed with exit code 1

stderr

error: could not apply aa4f5f8... [TASK] Update "Creating content" screenshots
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".

stdout

CONFLICT (modify/delete): Documentation/Localization.ru_RU/ContentElements/CreatingContent/Index.rst deleted in HEAD and modified in aa4f5f8 ([TASK] Update "Creating content" screenshots).  Version aa4f5f8 ([TASK] Update "Creating content" screenshots) of Documentation/Localization.ru_RU/ContentElements/CreatingContent/Index.rst left in tree.
CONFLICT (modify/delete): Documentation/Localization.ru_RU/screenshots.json deleted in HEAD and modified in aa4f5f8 ([TASK] Update "Creating content" screenshots).  Version aa4f5f8 ([TASK] Update "Creating content" screenshots) of Documentation/Localization.ru_RU/screenshots.json left in tree.

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-12.4 12.4
# Navigate to the new working tree
cd .worktrees/backport-12.4
# Create a new branch
git switch --create backport-145-to-12.4
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick aa4f5f84e2e30eebe11e9e2bdb989890914e7a26
# Push it to GitHub
git push --set-upstream origin backport-145-to-12.4
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-12.4

Then, create a pull request where the base branch is 12.4 and the compare/head branch is backport-145-to-12.4.