UefiCpuPkg: Check AP_SAFE_STACK_SIZE during build time.

UefiCpuPkg: Check AP_SAFE_STACK_SIZE during build time.

Check if AP_SAFE_STACK_SIZE is aligned with CPU_STACK_ALIGNMENT
during build time.

No functional or structural changes.

Cc: Guo Dong <guo.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Sean Rhodes <sean@starlabs.systems>
Cc: James Lu <james.lu@intel.com>
Cc: Gua Guo <gua.guo@intel.com>
Signed-off-by: Yuanhao Xie <yuanhao.xie@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>