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>
Docs: assorted corrections and clarifications
Multiple documentation edits to correct values, clarify behavior, and tighten wording across the wiki. Notable changes: update installer/localization counts; clarify Backgroundog audio/timing fields and media-session semantics; add Cache subfolders (SignalT, Content) and cache details; fix memory unit reporting (GiB) and other unit notes; adjust many settings defaults (BackdropType=None, Update: Server=Soferity, Module=Downloader, Extension=Executable, AutoType default); document silent-uninstall is broken; refine engine/config filenames and mpv defaults; various UX/command/alias clarifications and minor wording fixes.