With Ladybird now being its own repository, there's little reason
to keep the Ladybird Android port in the SerenityOS repository.
(The Qt port is useful to be able to test changes to LibWeb in lagom
so it'll stay around. Similar for the AppKit port, since getting
Qt on macOS is a bit annoying. But if the AppKit port is too much
pain to keep working, we should toss that too.
Eventually, the lagom browser ports should move out from Ladybird/
to Meta/Lagom/Contrib, but for now it might make sense to leave them
where they are to keep cherry-picks from ladybird easier.)
This follows the pattern for the other services spawned by WebContent.
The notable quirk about this service is that it's actually spawned by
the ImageCodecPlugin rather than in main.cpp in the non-Android port.
As a result we needed to do some ifdef surgery to get all the pieces
in place. But we can now load images in the Android port again :^).
This patch brings a service to handle image decompression. With it comes
security enhancement due to the process boundary. Indeed, consequences
of a potential attack is reduced as only the decoder will crash without
perturbing the WebContent process.
It also allows us to display pages containing images that we claim to
support but still make us crash, like for not-finished-yet decoders.
As an example, we can now load https://jpegxl.info/jxl-art.html without
crashing the WebContent process.
