Libva 2.16.0

• add: Add HierarchicalFlag & hierarchical_level_plus1 for AV1e.
• dep: Update README.md to remove badge links
• dep: Removed waffle-io badge from README to fix broken link
• dep: Drop mailing list, IRC and Slack
• autotools: use wayland-scanner private-code
• autotools: use the wayland-scanner.pc to locate the prog
• meson: use wayland-scanner private-code
• meson: request native wayland-scanner
• meson: use the wayland-scanner.pc to locate the prog
• meson: set HAVE_VA_X11 when applicable
• style:Correct slight coding style in several new commits
• trace: add Linux ftrace mode for va trace
• trace: Add missing pthread_mutex_destroy
• drm: remove no-longer needed X == X mappings
• drm: fallback to drm driver name == va driver name
• drm: simplify the mapping table
• x11: simplify the mapping table
• android: open() with O_CLOEXEC for device fd
• android: remove convoluted open_device() helper
• android: drop va_fool references
• ci: strengthen ci with -Werror
• ci: va/x11/nvctl: fix Wdeprecated-non-prototype on close_display
• ci: add clang-15 coverage and rearrange runners
• ci: upgrade FreeBSD to 13.1