Add stricter typing

What's Changed

• Twig by @SMillerDev in #146
• Test on php 8 by @SMillerDev in #136
• Allow data from stdin by @SMillerDev in #163
• Fix Phpstan issues by @SMillerDev in #206
• Add license scan report and status by @fossabot in #211
• Build: Fix release phar by @SMillerDev in #223
• Fix issues by @SMillerDev in #224
• Fix version by @SMillerDev in #225
• General: Stabilize twig template usage by @SMillerDev in #241
• Composer: Update deps by @SMillerDev in #242
• Add funding option by @SMillerDev in #243
• Update README.md by @SMillerDev in #244
• CI: update tools by @SMillerDev in #287
• chore: update CI checks by @SMillerDev in #284
• chore: add types by @SMillerDev in #296

Full Changelog: 2.3.0...2.4.0-rc6