* [protobuf] upgrade to latest release (v3.18.0)

This requires patching OpenCV as it uses a function removed in the
latest version of protobuf (FWIW, upstream OpenCV has a similar patch).

* The arcus port also needs a patch

* The caffe2 port also needs a patch

* The brpc port also needs a patch

* [arcus/any-lite/aixlog] Update to the latest version

* update version

* Apply requested changes

* update version

* update vcpkg.json

* update version

* [arcus] New port

Arcus is used by CuraEngine as a library for writing to sockets.
Adding this port helps with CuraEngine's build as well as any other
projects that depend on Arcus.

* review comments

* Remove reference to python3 in description since its disabled