the old displayName property via the IODisplay API is not working
anymore on ARM based macs and was broken in at least one other case.
instead we use the new localizedName property introduced in 10.15 of the
NSScreen. we don't need any backwards compatibility since 10.15 is the
oldest version we support now.
configs and scripts that use the options and properties fs-screen-name,
screen-name or display-names need to be adjusted since the names could
differ from the previous implementation via the IODisplay API.
Fixes#9697
this removes the direct access of the mp_vo_opts stuct via the vo struct
and replaces it with the m_config_cache usage. this updates the
fullscreen and window-minimized property via m_config_cache_write_opt
instead of the old mechanism via VOCTRL and event flagging. also use the
new VOCTRL_VO_OPTS_CHANGED event for fullscreen and border changes.
all the get_property_* usages were removed because in some circumstances
they can lead to deadlocks. they were replaced by accessing the vo and
mp_vo_opts structs directly, like on other vos.
additionally the mpv helper was split into a mpv and libmpv helper, to
differentiate between private and public APIs and for future changes
like a macOS vulkan context for vo=gpu.
