Add integration workflows for services:
- BlockStorage
- Compute
- Images
- Networking

* add readthedocs.yaml
* remove button
* move to python 3

* fix php-opencloud#351

* fix documentation requirements, remove unused links in docs

* add badges, remove old contacts from README.md

* clarify versioning 
* change documentation copyright

…s and Images/v2/listImages

remove custom theme

* one integration workflow to rule them all

* update README.md with new badge

* format via php-cs-fixer
* add unit tests with the lowest possible dependencies
* add unit tests with php 8.2 and 8.3
* add integration tests for  2023.1 antelope and yoga
* allow skipping integration, unit or both tests in pull requests

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Co-authored-by: k0ka <k0ka@users.noreply.github.com>

* add endpoints to create/get/remove application credentials
* add token creation using application credentials
* cancel running workflows on new commit

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Co-authored-by: smarcet <smarcet@gmail.com>
Co-authored-by: k0ka <k0ka@users.noreply.github.com>

* Changed guzzle final HandlerStack extension to factory class HandlerStackFactory

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Co-authored-by: k0ka <k0ka@users.noreply.github.com>
Co-authored-by: jarragon-slash2 <jarragon-slash2@users.noreply.github.com>

Co-authored-by: peter279k <peter279k@gmail.com>

use `include_once $this->sampleFile(` instead of `$path = $this->sampleFile(..); include_once $path`

* moved integration tests to phpunit 
* updated integration tests description in CONTRIBUTING.md
* added `name` parameter to `patchUser` so the sample file works properly
* added `Retrievable` interface to `VolumeType`
* added `HasWaiterTrait` to `Compute::Image`
* added `Token::validate()` function to check if Identity token is valid

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Co-authored-by: k0ka <k0ka@users.noreply.github.com>

* return HandlerStack for Backward Compatibility - php-opencloud#382

* Merge all network service extensions into main one using traits
* Add unit test error_reporting
* Increase volume attachment test timeout

* Rewrite most of documentation. 
* Make creating the `$openstack` object more clear.
* Rename and rearrange main operations as CRUDL (Create, Read, Update, Delete, List)

* Implement resuming and suspending of servers

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Co-authored-by: Martin Zurowietz <martin@zurowietz.de>

…d#397)

…#396)

fixes php-opencloud#335
fixes php-opencloud#398

fixes php-opencloud#399

…php-opencloud#405)

fixes php-opencloud#403
supersedes php-opencloud#404

* compare headers case insensitively
* drop support of unmaintained releases in CI (until they are returned in github action).

* override TARGET_BRANCH

…nto upstream-sync