Add VlcPlayer engine and update docs/enums
Introduce the new VlcPlayer live engine: add Engine-VlcPlayer.md and wire VlcPlayer into documentation, enums, settings, caches, logs, publish pipeline, preprocessor symbols, properties, and runtime-dependency pages. Update references/counts from seven→eight engines, include VlcPlayer in EngineType/PropertiesType lists, allowed-engine matrices (Gif/Video), cache and AppData paths, customization/property-panel docs, and publish scripts/docs to include the new project. Documentation clarifies libVLC is bundled (no runtime prompt) and notes hardware-acceleration behavior and GIF handling. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Bump bundled .NET runtime to 10.0.109
Update documentation to reflect the publish pipeline installing and trimming the bundled .NET runtime version 10.0.109. Changes applied to Publish-Pipeline.md, Runtime-Dependencies.md, and System-Requirements.md so install commands, minimum runtime versions, and explanatory text consistently reference 10.0.109.