zink: rewrite 64bit shader i/o as 32bit

zink: rewrite 64bit shader i/o as 32bit

zink can't use lower_io, so this all has to be done manually and in
excruciating depth and detail

fixes (tu):
KHR-Single-GL46.arrays_of_arrays_gl.InteractionFunctionCalls2
KHR-GL46.gpu_shader_fp64.fp64.named_uniform_blocks
KHR-GL46.gpu_shader_fp64.fp64.varyings
KHR-GL46.vertex_attrib_binding.advanced-bindingUpdate
KHR-Single-GL46.enhanced_layouts.varying_array_components
KHR-Single-GL46.enhanced_layouts.varying_array_locations
KHR-Single-GL46.enhanced_layouts.varying_components
KHR-Single-GL46.enhanced_layouts.varying_locations
KHR-Single-GL46.enhanced_layouts.xfb_explicit_location
dEQP-GLES3.functional.transform_feedback.basic_types.interleaved.lines.highp_mat3x4
dEQP-GLES3.functional.transform_feedback.basic_types.interleaved.lines.mediump_vec3
dEQP-GLES3.functional.transform_feedback.basic_types.interleaved.points.mediump_vec4
dEQP-GLES3.functional.transform_feedback.basic_types.separate.points.highp_vec3

Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16669>