GL allows the pipeline to "infer" a tcs shader if a tes shader is bound using
API-specified default values for gl_TessLevelOuter and gl_TessLevelInner,
but VK requires that both shaders be explicitly present

to handle this, create a generic tcs which translates all vs outputs to
invocation-based arrays and copy the appropriate value to the expected tes
input array location. also emit the default inner/outer values as push constants
so we don't have to recompile the shaders whenever the api calls occur

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <mesa/mesa!8152>