turnip: Use the common base object type and struct.

turnip: Use the common base object type and struct.

v2. Define new helper function to avoid duplicated a pair of function calls.
v3. Move new helper functions to vk_object.h and call them.
v4. Merge 2 commits to use commomn base object type and struct into one.

Signed-off-by: Hyunjun Ko <zzoon@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5539>