Add a shrink agl-demo-platform version

Base on agl-demo-platform, make a shrink version for low performance
board can run agl-demo-platform.
Weston, hmi-framework, some APPs and some services were deleted.
Using cluster-dashboard as qtwayland compositor instead of weston.

Bug-AGL: SPEC-2487

Signed-off-by: Ouyang Jun <ouyangj.fnst@cn.fujitsu.com>
Signed-off-by: Zhou Mingying <zhoumy@cn.fujitsu.com>
Signed-off-by: Liu Wenlong <liuwl.fnst@cn.fujitsu.com>
Change-Id: I96bb337f6ae157f696fc2e4fb61cdd7afc8f5109
(cherry picked from commit 1ccfd76fbdd7bb5fba6c98ddd965a00798c393dd)