Add broadcasting channel prefixing bootstrapper (#12)

* Rename old broadcast bootstrapper, add new one

* Add broadcast tenancy bootstrapper + tests

* Fix code style (php-cs-fixer)

* Fix prefixing

* Work on th bootstrapper's tests (wip – problem with events)

* Fix bootstrapper

* Test that auth closures of channels work correctly

* Fix bootstrapper

* Fix code style (php-cs-fixer)

* Delete channel cloning bootstrapper

* Add bootstrapper that prefixes broadcastOn channels under the hood

* Add broadcast channel registering helpers

* Update prefixing tests (WIP)

* Fix code style (php-cs-fixer)

* Improve comment

* Fix code style (php-cs-fixer)

* Allow customization of Pusher/Ably broadcaster extension

* Fix code style (php-cs-fixer)

* Implement prefix bootstrapper logic, test channel prefixing using a closure

* Work on the prefixing bootstrapper and tests

* Fix code style (php-cs-fixer)

* Add optional $options param to broadcasting helpers

* Test broadcasting helpers

* Fix code style (php-cs-fixer)

* Broadcasting channel prefixing + testing progress

* Improve helper methods

* Fix and improve test

* Fix extending in bootstrap()

* Fix code style (php-cs-fixer)

* Add docblocks, name things more accurately

* Fix code style (php-cs-fixer)

* Delete redundant method from testing broadcaster

* Test Pusher channel prefixing (probabaly redundant?)

* Test if channels get prefixed correctly when switching tenants

* Work with the current broadcast manager instead of overriding it

* Give the original channels to the overriden broadcasters

* Fix code style (php-cs-fixer)

* Simplify channel prefix bootstrapper

* Fix code style (php-cs-fixer)

* Fix comment

* Fix test

* Delete annotation

* Delete unused classes from test

* Delete outdated test

* Move broadcasting bootstrapper test to BootstrapperTest

* Improve bootstrapper test, delete unused event

* Add annotations to the bootstrapper

* Fix code style (php-cs-fixer)

* Improve wording

* Improve comment

* Update src/Bootstrappers/BroadcastChannelPrefixBootstrapper.php

* Apply suggestions from code review

* Optionally skip prefixing of specific channels

* Add and test central channel helper, update formatChannels overrides and tests

* Fix code style (php-cs-fixer)

* minor fixes

* Improve annotation

* Use "global__" prefix instead of "central__", add comments

* Correct tests

---------

Co-authored-by: PHP CS Fixer <phpcsfixer@example.com>
Co-authored-by: Samuel Štancl <samuel.stancl@gmail.com>

tests/Etc/TestingBroadcaster.php

@@ -6,7 +6,7 @@ use Illuminate\Broadcasting\Broadcasters\Broadcaster;
 
 class TestingBroadcaster extends Broadcaster {
     public function __construct(
-        public string $message
+        public string $message = 'nothing'
     ) {}
 
     public function auth($request)