Document building isolation container images

Document building isolation container images

This commit adds a new instruction document for the
Instrument Cluster target.
To reduce the main build section, we split the profile
description and build page.

Then, add a new section as follow:

|-- 0_Getting_Started
|   |-- 1_Quickstart
|   |-- 2_Building_AGL_Image
|   `-- 3_Build_and_Boot_guide_Profile
|       `-- 1_Instrument_Cluster_(IC-IVI_with_Container_isolation).md

Bug-AGL: SPEC-4190

Signed-off-by: Mohamed Amir <mohamed@hhq.suzuki.co.jp>
Signed-off-by: Harunobu Kurokawa <harunobu.kurokawa.dn@renesas.com>
Change-Id: Ib031f8656da5ae77454a662f765ed5f7159b8e1e
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/documentation/+/27667
Tested-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Reviewed-by: Naoto YAMAGUCHI <naoto.yamaguchi@aisin.co.jp>