Further corrections to 4.4 release notes

[ferafiks]

• Added highlights for the launcher and metrics
• Reworded the thank you's at the bottom
• Added mention of running Game Studio on Proton
• Added mention of file-based apps support
• Updated breaking changes
• Rewritten CI to be easier to understand for non-engine developers
• Other changes to de-AI-fy the release notes

This PR is a draft while I work on remaking the sdsl pipeline visualization.

[ferafiks]

Ready for review: https://stride-docs.dockfrankenste.in/4.4/en/ReleaseNotes/ReleaseNotes.html

Also I forgot to mention: there is a TODO: IMAGE in the launcher section, since the visual aspect of it is still being worked on

[VaclavElias]

Thanks. This update is very good and nicely read. If no futher comments I can merge it as there will be follow ups for sure. Also, we might need your help with the blog post. I can merge my draft stride3d/stride-website#389 and let you work on it.