* Replace MailManager singleton with an instance of a custom mail manager which always resolves the mailers instead of getting the cached ones
* Fix code style (php-cs-fixer)
* Add MailTenancyBootstrapper
* Add MailTenancyBootstrapper to tenancy.bootstrappers config (commented out)
* Fix code style (php-cs-fixer)
* Make credentials map a public static property
* Always resolve only the mailers specified in the mailersToNotCache public static property
* Fix typo in comment
* Update TenancyServiceProvider comment
* add todo
* Add comments to TenancyMailManager, rename property
* Remove the configKey array check
* Simplify bootstrap method
* Change $credentialsMap so that config keys are the keys, and the tenant property names are the values
* Rename $mailersToAlwaysResolve to $tenantMailers
* Update comment
* Update comment
* Rename variable in TenancyServiceProvider comment
* Scaffold tests
* Update comments after review
* Uncomment MailTenancyBootstrapper in config
* Use array_key_exists instead of null check
* Split config logic into methods
* Update mapping credentials
* Add tests for the added logic
* Fix code style (php-cs-fixer)
* Delete default 'smtp' mailer in $tenantMailers
* Add separate method to pick the appropriate mail credentials map preset
* Specify test name
* Move mail bootstrapper tests to BootstrapperTest
* Depend less on the default mailer by adding a static `$mailer` property
* Use static property for map presets
* Comment out MailTenancyBootstrapper from config
* Add return types to MailTenancyBootstrapper methods
* Update test name
* Move MailManager extension to MailTenancyBootstrapper
* Fix code style (php-cs-fixer)
* Update config reverting test
* Use `invade()` instead of ReflectionClass
* Fix constructor parameter formatting
* Delete TenancyMailManager, update tests
* Add return type
* Update comment
* Update MailTest
* Delete `group('mailer')`
* Delete bindNewMailManagerInstance()
* Delete remaining `group('mailer')`
* Fix comment
* Fix comment
Co-authored-by: PHP CS Fixer <phpcsfixer@example.com>
Co-authored-by: Samuel Štancl <samuel.stancl@gmail.com>
