anv: Support workgroup memory in other shaders

anv: Support workgroup memory in other shaders

Mesh and Task shaders can use workgroup memory, so generalize its
handling in anv by moving it from anv_pipeline_compile_cs() to
anv_pipeline_lower_nir().

Update Pipeline Statistics accordingly.

Reviewed-by: Marcin Ślusarz <marcin.slusarz@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11230>