Updating Scaffolder code with PHP 8.1 features

[msmakouz]

Q	A
Bugfix?	❌
Breaks BC?	❌
New feature?	❌
Issues	#512

[codecov]

Codecov Report

Merging #640 (5e0d20b) into 3.0 (ae91fcb) will decrease coverage by 0.01%.
The diff coverage is 90.52%.

@@             Coverage Diff              @@
##                3.0     #640      +/-   ##
============================================
- Coverage     82.41%   82.40%   -0.02%     
  Complexity     5750     5750              
============================================
  Files           667      667              
  Lines         14362    14352      -10     
============================================
- Hits          11837    11827      -10     
  Misses         2525     2525              

Impacted Files	Coverage Δ
...affolder/src/Declaration/BootloaderDeclaration.php	100.00% <ø> (ø)
.../Scaffolder/src/Declaration/CommandDeclaration.php	100.00% <ø> (ø)
...er/src/Declaration/ConfigDeclaration/TypeHints.php	100.00% <ø> (ø)
...affolder/src/Declaration/JobHandlerDeclaration.php	100.00% <ø> (ø)
...affolder/src/Declaration/MiddlewareDeclaration.php	100.00% <ø> (ø)
...Scaffolder/src/Bootloader/ScaffolderBootloader.php	80.95% <50.00%> (-1.66%)	⬇️
src/Scaffolder/src/helpers.php	68.75% <50.00%> (-3.48%)	⬇️
src/Scaffolder/src/Config/ScaffolderConfig.php	93.44% <86.66%> (ø)
...c/Scaffolder/src/Declaration/ConfigDeclaration.php	98.98% <95.00%> (-0.08%)	⬇️
src/Scaffolder/src/Command/AbstractCommand.php	90.00% <100.00%> (-0.70%)	⬇️
... and 11 more

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