style: Convert continuation lines to tabs in Generals

[bobtista]

Summary

• Convert continuation lines (multi-line function args, initializer lists, etc.) to tabs
• Continuation lines get parent statement depth + 1 tab
• Closing delimiters on their own line go at parent depth
• All changes are whitespace-only (git diff -w is empty)

Note on diff size

This PR currently shows a large diff because it includes Phase 1-3 changes
(#2561-#2564) in its branch history. After those PRs merge and this is
rebased onto main, the diff will shrink to just the continuation line delta.

Both parts

• style: Convert continuation lines to tabs in Generals #2571 Generals (~277 continuation files after rebase)
• style: Convert continuation lines to tabs in GeneralsMD #2572 GeneralsMD (~314 continuation files after rebase)

Script

The formatting script is included for reference. See scripts/cpp/convert_leading_spaces_to_tabs.py.

[greptile-apps]

Too many files changed for review. (545 files found, 500 file limit)

[bobtista]

These should be rebased after 2561-2564 get merged, as they contain those changes. I couldn't set the base branch in github here because those branches only exist on my fork.