Apple decided to expose most (but not all) `CIFilter` using protocols
(instead of weakly named dictionaries). Most of this maps well with
our strong bindings but there are cases where we:
* missing some properties (easy, there were added); or
* used a different types [1] and that requires new members / obsoletion
A few other API were also added in Xcode 11 (nothing in 11.1 or 11.2) and
included in this PR.
New introspection tests were also added to minimize the risk that
the API and generator changes produced incorrect code. This lead
to the finding of some missing API (in particular `Output*` properties)
that were added.
[1] Often ours are better (using `float` for a `bool` value is not
optimal) but we do not have `[BindAs]` for protocols :( to _fix_ them
Note: this replace draft PR https://github.com/xamarin/xamarin-macios/pull/7120 but it's has quite a bit of changes in filter generation (inlining protocols) and that affected bindings too.
* Not every old annotations have been migrated (work in progress, to be completed in another PR);
* Sanitation of the data files (e.g. removal of dupes and fixed, by Apple, entries) is done, but not automated (also a work in progress)
Even then this is immediately useful, i.e. better merged before 15.6 gets branched.
Sebastien Pouliot
Sebastien Pouliot