turnip: Update query availability on render pass end

turnip: Update query availability on render pass end

Unlike on an immidiate-mode renderer, Turnip only renders tiles on
vkCmdEndRenderPass. As such, we need to track all queries that were
active in a given render pass and defer setting the available bit
on those queries until after all tiles have rendered.

This commit adds a draw_epilogue_cs to tu_cmd_buffer that is
executed as an IB at the end of tu_CmdEndRenderPass. We then emit
packets to this command stream that update the availability bit of a
given query in tu_CmdEndQuery.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3279>