bug #26677 Support phpdbg SAPI in Debug::enable() (hkdobrev)
bug #26677 Support phpdbg SAPI in Debug::enable() (hkdobrev)

This PR was squashed before being merged into the 2.7 branch (closes #26677).

Discussion
----------

Support phpdbg SAPI in Debug::enable()

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | yes
| New feature?  | no <!-- don't forget to update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- don't forget to update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets |    <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        | <!-- required for new features -->

PHPDBG is a CLI PHP debugger which could be useful for debugging in development or for running PHPUnit tests with code coverage faster compared to XDebug.

It has CLI characteristics, but it runs as a different SAPI.

Commits
-------

49a144f28c Support phpdbg SAPI in Debug::enable()

garak/symfony,HeahDude/symfony,HeahDude/symfony,sgehrig/symfony,nasimnabavi/symfony,shieldo/symfony,paradajozsef/symfony,lyrixx/symfony,1ed/symfony,andreia/symfony,ro0NL/symfony,Pierstoval/symfony,ragboyjr/symfony,ajgarlag/symfony,SaschaDens/symfony,bendavies/symfony,stof/symfony,jean-gui/symfony,paradajozsef/symfony,docteurklein/symfony,OndraM/symfony,joelwurtz/symfony,hhamon/symfony,zcodes/symfony,iltar/symfony,dmaicher/symfony,pierredup/symfony,jderusse/symfony,mihai-stancu/symfony,jderusse/symfony,smatyas/symfony,andrerom/symfony,mnapoli/symfony,ro0NL/symfony,OskarStark/symfony,mpdude/symfony,d-ph/symfony,xabbuh/symfony,mihai-stancu/symfony,ogizanagi/symfony,lyrixx/symfony,dmaicher/symfony,vincentaubert/symfony,damienalexandre/symfony,jderusse/symfony,d-ph/symfony,smatyas/symfony,maidmaid/symfony,bendavies/symfony,nicolas-grekas/symfony,MatTheCat/symfony,andrerom/symfony,yceruto/symfony,derrabus/symfony,SaschaDens/symfony,zcodes/symfony,yceruto/symfony,andreia/symfony,Pierstoval/symfony,e-moe/symfony,1ed/symfony,OndraM/symfony,mweimerskirch/symfony,zorn-v/symfony,SpacePossum/symfony,Nyholm/symfony,tgalopin/symfony,SpacePossum/symfony,gimler/symfony,derrabus/symfony,stof/symfony,weaverryan/symfony,romaricdrigon/symfony,ajgarlag/symfony,HeahDude/symfony,sgehrig/symfony,Pierstoval/symfony,gnat42/symfony,voronkovich/symfony,teohhanhui/symfony,deguif/symfony,dmaicher/symfony,localheinz/symfony,pierredup/symfony,jakzal/symfony,OndraM/symfony,SaschaDens/symfony,1ed/symfony,ogizanagi/symfony,gonzalovilaseca/symfony,Tobion/symfony,lstrojny/symfony,mihai-stancu/symfony,alekitto/symfony,gonzalovilaseca/symfony,ogizanagi/symfony,yceruto/symfony,oleg-andreyev/symfony,jvasseur/symfony,gimler/symfony,Koc/symfony,michaelperrin/symfony,curry684/symfony,sroze/symfony,lstrojny/symfony,ro0NL/symfony,Slamdunk/symfony,Nyholm/symfony,zorn-v/symfony,c960657/symfony,garak/symfony,teohhanhui/symfony,weaverryan/symfony,fabpot/symfony,Deamon/symfony,romaricdrigon/symfony,hhamon/symfony,smatyas/symfony,ragboyjr/symfony,Pierstoval/symfony,teohhanhui/symfony,Simperfit/symfony,Tobion/symfony,chalasr/symfony,mihai-stancu/symfony,SpacePossum/symfony,shieldo/symfony,yceruto/symfony,zcodes/symfony,symfony/symfony,tgalopin/symfony,OskarStark/symfony,pyrech/symfony,jean-gui/symfony,zerkms/symfony,bendavies/symfony,mnapoli/symfony,bendavies/symfony,iltar/symfony,pierredup/symfony,teohhanhui/symfony,fabpot/symfony,romaricdrigon/symfony,chalasr/symfony,Simperfit/symfony,jderusse/symfony,andreia/symfony,tucksaun/symfony,localheinz/symfony,frankdejonge/symfony,OndraM/symfony,Koc/symfony,Deamon/symfony,frankdejonge/symfony,smatyas/symfony,nasimnabavi/symfony,mnapoli/symfony,e-moe/symfony,iltar/symfony,maidmaid/symfony,phramz/symfony,fabpot/symfony,gonzalovilaseca/symfony,ajgarlag/symfony,gonzalovilaseca/symfony,nicolas-grekas/symfony,stof/symfony,localheinz/symfony,phramz/symfony,Slamdunk/symfony,joelwurtz/symfony,michaelperrin/symfony,jakzal/symfony,e-moe/symfony,pamil/symfony,Koc/symfony,gnat42/symfony,damienalexandre/symfony,Simperfit/symfony,andreia/symfony,Einenlum/symfony,mweimerskirch/symfony,hhamon/symfony,mpdude/symfony,e-moe/symfony,Simperfit/symfony,zerkms/symfony,Einenlum/symfony,jakzal/symfony,mweimerskirch/symfony,phramz/symfony,mnapoli/symfony,garak/symfony,frankdejonge/symfony,OskarStark/symfony,jvasseur/symfony,ogizanagi/symfony,SaschaDens/symfony,kbond/symfony,Taluu/symfony,Koc/symfony,nasimnabavi/symfony,jakzal/symfony,lyrixx/symfony,oleg-andreyev/symfony,MatTheCat/symfony,gnat42/symfony,voronkovich/symfony,mweimerskirch/symfony,localheinz/symfony,Deamon/symfony,mpdude/symfony,symfony/symfony,OskarStark/symfony,c960657/symfony,nicolas-grekas/symfony,deguif/symfony,Einenlum/symfony,docteurklein/symfony,romaricdrigon/symfony,weaverryan/symfony,fabpot/symfony,vincentaubert/symfony,MatTheCat/symfony,maidmaid/symfony,arjenm/symfony,kbond/symfony,ajgarlag/symfony,stof/symfony,smatyas/symfony,symfony/symfony,Nyholm/symfony,mnapoli/symfony,zerkms/symfony,voronkovich/symfony,lstrojny/symfony,iltar/symfony,d-ph/symfony,ragboyjr/symfony,Slamdunk/symfony,pyrech/symfony,oleg-andreyev/symfony,Taluu/symfony,zcodes/symfony,ragboyjr/symfony,tucksaun/symfony,nasimnabavi/symfony,joelwurtz/symfony,xabbuh/symfony,Einenlum/symfony,kbond/symfony,curry684/symfony,ro0NL/symfony,sgehrig/symfony,mweimerskirch/symfony,zerkms/symfony,damienalexandre/symfony,paradajozsef/symfony,hhamon/symfony,tucksaun/symfony,Simperfit/symfony,jvasseur/symfony,gimler/symfony,alekitto/symfony,OndraM/symfony,alekitto/symfony,tgalopin/symfony,andrerom/symfony,shieldo/symfony,maidmaid/symfony,phramz/symfony,pamil/symfony,curry684/symfony,derrabus/symfony,d-ph/symfony,sroze/symfony,dmaicher/symfony,andrerom/symfony,tucksaun/symfony,shieldo/symfony,sroze/symfony,xabbuh/symfony,chalasr/symfony,SpacePossum/symfony,michaelperrin/symfony,alekitto/symfony,deguif/symfony,michaelperrin/symfony,tgalopin/symfony,frankdejonge/symfony,zorn-v/symfony,vincentaubert/symfony,jean-gui/symfony,pyrech/symfony,HeahDude/symfony,jvasseur/symfony,lyrixx/symfony,xabbuh/symfony,sgehrig/symfony,curry684/symfony,SpacePossum/symfony,gimler/symfony,mihai-stancu/symfony,derrabus/symfony,deguif/symfony,MatTheCat/symfony,Taluu/symfony,weaverryan/symfony,sroze/symfony,zorn-v/symfony,Nyholm/symfony,symfony/symfony,arjenm/symfony,pamil/symfony,gnat42/symfony,pyrech/symfony,oleg-andreyev/symfony,arjenm/symfony,pierredup/symfony,docteurklein/symfony,Tobion/symfony,mpdude/symfony,paradajozsef/symfony,voronkovich/symfony,docteurklein/symfony,arjenm/symfony,vincentaubert/symfony,docteurklein/symfony,Tobion/symfony,Taluu/symfony,Deamon/symfony,chalasr/symfony,c960657/symfony,Slamdunk/symfony,kbond/symfony,damienalexandre/symfony,Deamon/symfony,jean-gui/symfony,1ed/symfony,pamil/symfony,nicolas-grekas/symfony,c960657/symfony,joelwurtz/symfony,SaschaDens/symfony,garak/symfony