8.2
CS fixes
[Messenger][Process] add `fromShellCommandline` to `RunProcessMessage`
Merge branch '6.4' into 7.4
Merge branch '7.4' into 8.0
Add PR template and auto-close PR on subtree split repositories
Added missing files .gitignore
Remove some implicit bool type juggling
Update license years (last time)
[Process] Narrow `PhpExecutableFinder` return types
[Process] Improve process typing
Merge branch '8.0' into 8.1
Add call to backers in README files
Bump to php >= 8.4.1
Update XSD references in phpunit.xml.dist files