feat: support-symfony-6, except for symfony/http-foundation

[Chris53897]

getMasterRequest() is removed in Symfony 6.
https://github.com/symfony/http-foundation/blob/6.0/CHANGELOG.md#60

This PR builds a small BC layer to support symfony 4-6.

PhpUnit needs to be allow 9.5 otherwise tests will fail. This is because of the mocking of Symfony/Form and more.
Error : Call to undefined method ReflectionUnionType::getName() /Payum/src/Payum/Core/Tests/Bridge/Symfony/Action/ObtainCreditCardActionTest.php:383 /Payum/src/Payum/Core/Tests/Bridge/Symfony/Action/ObtainCreditCardActionTest.php:83

The symfony/http-foundation in version 6 is excluded because of #933

[Chris53897]

Test fail again because of PhpUnit 9 deprecation at()

[pierredup]

@Chris53897 I have switched the branch to 1.x, since this is a new feature that should go into the next minor 1 release (The branch 1.7.x is for bug-fixes against the 1.7 version only).

Test fail again because of PhpUnit 9 deprecation at()

Is phpunit 9 necessary for this change? Otherwise it can be removed, I'll work on a separate PR to support PhpUnit 9 then

[Chris53897]

ok, thanks.

Yes PhpUnit 9 is necessary, otherwise tests will fail for symfony 6. See ErrorMessage above.
For 2.x the work is already done.
An improvment could be to rewrite the tests for the ->at() Deprecations.
But this has no priority in my eyes for the moment.

[pierredup]

For 2.x the work is already done.
An improvment could be to rewrite the tests for the ->at() Deprecations.
But this has no priority in my eyes for the moment.

I'll work on removing the at calls, and will merge the changes into your PR at #932. That way, we can get the build green for that PR. I'll also change the target to 1.x, since it's something that can be merged into the next minor release for version 1, and will help with other changes going forward (E.G this PR)

[Chris53897]

Sounds good. Thanks

I target the wrong branch again. Shame on me. Sorry

[pierredup]

Thank you @Chris53897