gfxstream: guest: vulkan: use connection manager

This adds the GfxStreamVulkanConnection, and makes
libgfxstream_vulkan.so use it.  All dependencies
to HostConnection are removed.

For Android builds, dependencies to renderControl
and libOpenGlCodecCommon remain.  In the future,
these will be isolated to Goldfish-based system
images.

Reviewed-by: Aaron Ruby <aruby@blackberry.com>
Acked-by: Yonggang Luo <luoyonggang@gmail.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27246>

src/gfxstream/codegen/scripts/cerealgenerator.py

@@ -350,7 +350,6 @@ class IOStream;
 
         functableImplInclude = """
 #include "VkEncoder.h"
-#include "../OpenglSystemCommon/HostConnection.h"
 #include "ResourceTracker.h"
 #include "gfxstream_vk_entrypoints.h"
 #include "gfxstream_vk_private.h"