Added AGL Layers in Developer Guides

Revised and added AGL Layers as a part of Developer Guides.

Bug-AGL: [SPEC-3633]

Signed-off-by: Shankho Boron Ghosh <shankhoghosh123@gmail.com>
Change-Id: Ie66bd8bfd89d129c7fc49c20a83c331e069e4a46
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/documentation/+/25661
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Tested-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>

1 files changed, 0 insertions, 124 deletions

diff --git a/docs/3_Developer_Guides/1_AGL_Layers/2_meta-agl.md b/docs/3_Developer_Guides/1_AGL_Layers/2_meta-agl.md
deleted file mode 100644
index 0a8ab83..0000000
--- a/docs/3_Developer_Guides/1_AGL_Layers/2_meta-agl.md
+++ /dev/null
@@ -1,124 +0,0 @@
----
-title: meta-agl
----
-
-## Introduction
-
-The `meta-agl` layer provides the minimal set of software
-to boot an AGL Distribution system.
-You use this layer as the minimal core on which to build AGL profiles.
-
-**NOTE:** The `meta-agl` layer does not include a reference UI.
-  The reference UI is included as part of the
-  [`meta-agl-demo`](./meta-agl-demo.html) layer.
-  Furthermore, `meta-agl` does not include additional components, such
-  as security, which are part of the
-  `meta-agl-extra` layer.
-
-## Sub-Layers
-
-The `meta-agl` layer itself contains many sub-layers and files.
-Following is a "tree" look at the layer:
-
-```
-.
-├── docs
-├── meta-agl
-├── meta-agl-bsp
-├── meta-agl-distro
-├── meta-agl-profile-cluster
-├── meta-agl-profile-cluster-qt5
-├── meta-agl-profile-core
-├── meta-agl-profile-graphical
-├── meta-agl-profile-graphical-html5
-├── meta-agl-profile-graphical-qt5
-├── meta-agl-profile-hud
-├── meta-agl-profile-telematics
-├── meta-app-framework
-├── meta-netboot
-├── meta-security
-├── README-AGL.md
-├── README.md
-├── scripts
-├── templates
-```
-
-This list provides some overview information on the files and sub-layers
-in `meta-agl`:
-
-* `docs`: Contains files that support AGL documentation.
-* `meta-agl`: Contains layer configuration for the `meta-agl` layer.
-* `meta-agl-bsp`: Contains adaptations for recipes and required packages
-  to boot an AGL distribution on targeted hardware and emulation (i.e. QEMU).
-* `meta-agl-distro`: Contains distro configuration and supporting scripts.
-* `meta-agl-profile-cluster`: The middleware for the AGL cluster profile.
-  The set of packages required for AGL Cluster Distribution.
-  Profiles include support for Wayland images.
-* `meta-agl-profile-cluster-qt5`: The middleware for the AGL Qt5-based cluster profile.
-  The set of packages required for AGL Qt5-based Cluster Distribution.
-  Profiles include support for Wayland images with Qt5.
-* `meta-agl-profile-core`: Configuration and recipes for the AGL core profiles.
-* `meta-agl-profile-graphical`: Configuration and recipes supporting graphical user
-  interfaces.
-* `meta-agl-profile-graphical-html5`: Configuration and recipes supporting profiles
-  with HTML user interface support.
-* `meta-agl-profile-graphical-qt5`: Configuration and recipes supporting profiles
-  with Qt5-based user interface support.
-* `meta-agl-profile-hud`: Configuration and recipes supporting profiles with
-  Head-Up-Display (HUD) support.
-* `meta-agl-profile-telematics`: Configuration and recipes supporting profiles with
-  telematics support.
-* `meta-app-framework`: Configuration and recipes supporting the AGL Application
-  Framework.
-* `meta-netboot`: Contains recipes and configuration adjustments to allow network
-  boot through network block device (NBD) since network file system (NFS) does not
-  support security labels.
-* `meta-security`: Configuration and recipes supporting security applications.
-* `scripts`: AGL development setup and support scripts.
-* `templates`: Base, feature, and machine templates used in the AGL development
-  environment.
-
-## Packagegroups
-
-This section describes the AGL
-[packagegroup](https://yoctoproject.org/docs/ 3.1.2/dev-manual/dev-manual.html#usingpoky-extend-customimage-customtasks)
-design:
-
-* packagegroup-agl-image-minimal
-
-        packagegroup-agl-core-automotive.bb
-        packagegroup-agl-core-connectivity.bb
-        packagegroup-agl-core-graphics.bb
-        packagegroup-agl-core-kernel.bb
-        packagegroup-agl-core-multimedia.bb
-        packagegroup-agl-core-navi-lbs.bb
-        packagegroup-agl-core-os-commonlibs.bb
-        packagegroup-agl-core-security.bb
-        packagegroup-agl-core-speech-services.bb
-
-  The previous list of Packagegroups are used to create the `agl-image-minimal` image,
-  which is a small image just capable of allowing a device to boot.
-
-  Subsystem should maintain packagegroup-agl-core-[subsystem].bb which should
-  hold sufficient packages to build `agl-image-minimal`.
-
-* packagegroup-agl-image-ivi
-
-        packagegroup-agl-ivi-automotive.bb
-        packagegroup-agl-ivi-connectivity.bb
-        packagegroup-agl-ivi-graphics.bb
-        packagegroup-agl-ivi-kernel.bb
-        packagegroup-agl-ivi-multimedia.bb
-        packagegroup-agl-ivi-navi-lbs.bb
-        packagegroup-agl-ivi-os-commonlibs.bb
-        packagegroup-agl-ivi-security.bb
-        packagegroup-agl-ivi-speech-services.bb
-
-  The previous list of Packagegroups are used to create the `agl-image-ivi`
-  image, which is a baseline image (i.e. Service Layer and Operating System
-  Layer defined in AGL Spec v1.0) for the AGL profiles.
-
-* packagegroup-agl-test.bb
-
-  Additional tools used in QA tests (for agl-image*-qa).
-