Validate shared subscription and closed connection if not valid

[andsel]

What does this PR do?

During the processing of an MQTT5 SUBSCRIBE message search all topicFilters for shared subscriptions and check for validity respect to specs [MQTT-4.8.2-1] [MQTT-4.8.2-1]

Why is it important/What is the impact to the user?

Part of shared subscription implementation #791

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have made corresponding change to the default configuration files (and/or docker env variables)
• I have added tests that prove my fix is effective or that my feature works
• [ ] I have updated the Changelog if it's a feature or a fix that has to be reported