APPBROWSER-298, APPBROWSER-306: Reimplement the common code of compute shader

The new common code of compute shader is in file helpers_cs.h
Rewrite the direct_convolution1x1.cs and softmax_layer.cs to use the new common code.

It will also remove the dependence of the token pasting operator (##).
We'll remove the "##" support after we rewrite all of the compute shader code.

Change-Id: Icd8553ef6b61ad484a8507590ac8ed499bd47061
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/95455
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Frank Lei <frank.lei@arm.com>
(cherry picked from commit 0a4f83570d261f839d9866b68979efe8d7a95883)
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/95601
Reviewed-by: Jim He <jim.he@arm.com>
39 files changed