fix: correct phpstan errors and update schema urls

See merge request !10

This commit removes unnecessary inputs and the entire phpunit-php8.1 block from .gitlab-ci.yml,
enabling PHPUnit to run on PHP 8.1 in the pipeline.

This commit includes several modifications:
- Removed the ignoreErrors directives in phpstan-baseline.neon as the corresponding issues have
been resolved
- Updated 'itemtype' URL from 'http://' to 'https://'
- Removed an obsolete comment block above the getSite method in Timeline.php
- Added variable documentation in types/timeline.php to clarify variable types and avoid phpstan
errors.

Related: #3

fix: show all entries if no limit is set in settings

See merge request !9

Next 2.x

See merge request !7

Release

See merge request !5

Release

See merge request !4

Related: #1

Related: #1

feat: use images in timeline

See merge request !2

# Conflicts:
#   composer.json
#   src/QUI/Timeline/Controls/Timeline.php
#   types/timeline.php

Add QUIQQER Tooling

See merge request !1