Co-authored-by: Daniel Pfeiffer <daniel@mediabounds.com>

* Add cachedir-setting and use it for Symfony cache

* s/Symfony/SimpleSAMLphp

Co-authored-by: Thijs Kinkhorst <thijs@kinkhorst.com>

* Remove tempdir

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Co-authored-by: Thijs Kinkhorst <thijs@kinkhorst.com>

For the trick to work, the file needs to be on the same filesystem.
The tempdir is likely not on the same filesystem so the rename will
not be instantaneous. This probably worked in the past when the
tempdir was expected to be a subdir of the SimpleSAMLphp installation.

Fix it by writing a file to the same directory as the target file,
which will always be on the same FS. Also do not just use a rand()
number but something more random as we do in other places in the code.

This reverts a few minor things that were already rolled out in master
in all my enthousiasm

* For descriptions, check error code existance in descriptions rather than in titles

* Prepare error code constants

* Propagate error codes through the codebase

* Make error codes more extendable

* Fix spell check errors from CICD

* Fix phpcs errors

* Move from static to instance methods

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Co-authored-by: Marko Ivančić <marko.ivancic@srce.hr>
Co-authored-by: Tim van Dijen <tvdijen@gmail.com>

* Changed the UNIQUE key to a PRIMARY key for the tableVersion and LogoutStore tables for better compatibility with Drupal.

* Increased version number of 'saml_LogoutStore' table to 5 and initialized version number of 'tableVersion' table to 1; older versions of these tables are updated with PRIMARY KEY replacing UNIQUE.

* Move the custom Error- and Exception handlers to their own classes

Co-authored-by: Guillaume Rousse <guillaume.rousse@renater.fr>

* Feature: add optional precondition to authproc-filters to be able to run them conditionally

* Import rule-inserter code from cirrusidentity/simplesamlphp-module-general to accomodate for more complex scenarios

- Adds several commands to update/generate translations and to detect unused translations.
- Adds a new workflow to add new translation strings from Twig- and/or Php-files into the .po-files for every language.
- Runs .mo-file generation as part of the build-process.

This matches both the code, and the code comments, the documentation
and the behaviour of 1.19 so it seems to be a bug due to refactoring.

Add support for Metadata Deployment Profile for errorURL

generate selected SSL context options for the Predis client.

see https://www.php.net/manual/en/context.ssl.php

closes #1804