[TASK] Split up page TSconfig's mod properties

[brotkrueml]

The mod page is really long. By splitting up, the pages are much smaller. Additionally, the properties are now visible in the main navigation which eases the access.

In the new pages, only the header sections are adjusted, nothing else is done. They can be streamlined in a follow-up.

Releases: main, 12.4, 11.5

[garvinhicking]

Good idea on splitting this up

[github-actions]

The backport to 11.5 failed:

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

stderr

error: could not apply ec9790d... [TASK] Split up page TSconfig's mod properties
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

Auto-merging Documentation/PageTsconfig/Mod.rst
CONFLICT (content): Merge conflict in Documentation/PageTsconfig/Mod.rst

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-11.5 11.5
# Navigate to the new working tree
cd .worktrees/backport-11.5
# Create a new branch
git switch --create backport-446-to-11.5
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick ec9790d46d199e8cc30fecbbe3dc106a9f8a2c09
# Push it to GitHub
git push --set-upstream origin backport-446-to-11.5
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-11.5

Then, create a pull request where the base branch is 11.5 and the compare/head branch is backport-446-to-11.5.