This reverts commit 153d109d.

* Migrate metadata-extensions to new interface

* Bump saml2-library

* Migrate md:Organization to new interface

* Bump saml2 library

* Drop hint.cidr functionality; use mdui:DiscoHints/IPHint instead

* Migrate md:KeyDescriptor to new interface

* Bump saml2 library

* Migrate ds-elements to new interface from xml-security lib

* Migrate md:ContactPerson to new interface

* Fix hosted SP metadata generation

* Fix codesniffer issues

* Bump saml2-lib

* Migrate md:NameIDFormat to new interface

* Migrate (indexed) endpoints to new interface

* Fix for NameIDFormat

* Fix minor bugs

* Fix long lines

* Fix array key initializatino

* Only add isRequired attribute when it's true

* Update composer-file

* Remove unnecessary test; the saml2-lib ensures a specs-compliant representation of an AttributeConsumerService-element

* Fix annotation

* Migrate HTTP::redirect

* Migrate HTTP::redirectTrustedURL

* Migrate HTTP::redirectUntrustedURL

* Migrate HTTP::submitPOSTData

* Temporarily revert to make phpunit work

* Migrate logout handlers

* Remove unnecessary assertion & simplify logics

* Remove unnecessary assertion & add new one to check response type

* Remove unnecessary assertion & rationalize code

* Migrate IdPDisco

* Migrate ProcessingChain

* Fix return-type & drop unnecessary use-statement

* Address review comments

* Do not add caching headers at all

* Fix type-confusions

* Migrate saml2 bindings

* Migrate completeAuth

* Migrate handleLogout

* Migrate some more

* Migrate a whole lot more (messy)

* Migrate logout

* Migrate a whole lot more (also messy)

* Many fixes

* Raise coverage

* Psalm: Ignore exteranl adfs-module

* Replace use of _GET globals

* Migrate bindings (send)

* Migrate bindings (receive)

* Fix psalm-dev

* Fix assertion

* s/subclassOf/isInstanceOf

* Fix type-confusion in logout handlers

* Update container

* Bump saml2 + adfs

* Rename namespace

* fix: tarball extracted in current directory

* Cleanup composer-file

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Co-authored-by: Tim van Dijen <tvdijen@gmail.com>

* Move www > public

* Remove local assets

* Import remotely generated assets

* Update files to reflect www > public move

* Update upgrade notes

* Make assets-filter aware of new assets-location

* Update test-framework

* Exclude generated assets from code sniffer

* Change build-script to leverage composer archive

* No longer include data/ cache/ and log/ directories. They don't belong in the install-dir

* Remove unnecessary .gitkeep files

* Merge config&config-templates and metadata&metadata-templates; templates renamed to .dist

* Reduce git clone overhead

* Throw an exception if datadir not set

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

* Allow symfony/translation-contracts ^3

Co-authored-by: Tim van Dijen <tvdijen@gmail.com>

Add Symfony 6 support