Upgrade code to work in PHP8 or greater and/or Laravel 9 or greater

[summercms]

Fixes https://github.com/voku/HtmlMin/issues/84

This repo doesn't work in PHP 8, 8.1 or 8.2 due to the namespaces not being Capitalized.

• Have updated the namespaces.
• Have updated composer.json and removed php 7 as security updates ended in 28 November 2022.
• Have updated readme with new namespaces

Need to update the connecting repos now.

Linked to Pull Requests

https://github.com/voku/html-compress-twig/pull/5

https://github.com/voku/HtmlMin/pull/85

https://github.com/voku/simple_html_dom/pull/95

https://github.com/voku/simple-cache/pull/30

https://github.com/voku/portable-ascii/pull/87

Tested on the following

Tested on PHP 8.2 and Laravel 9.1

---

This change is 

[sonarcloud[bot]]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
43 Code Smells

No Coverage information
0.0% Duplication

[summercms]

Done some digging.

This package fails PSR-1 Chapter 3 rules for Namespaces and Class Names:

Class names MUST be declared in StudlyCaps.

Can share a link to the PSR Spec here: https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-1-basic-coding-standard.md#3-namespace-and-class-names

[summercms]

Closing this as looks like an issue with the auto-discovery loader in the Laravel CMS and not an issue with this package, Laravel or PHP.