manuals: split dev-manual/common-tasks.rst

A 500 KB source file is always harder to manage,
and can have section title conflicts.

So, the "Common Tasks" document is gone and all
its constituents are moved up one level.
You now have 40 chapters in the Development Tasks Manual.

(From yocto-docs rev: 8a45bc469411410020b8e688c137395fcaf3761b)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/dev-manual/index.rst

@@ -12,7 +12,43 @@ Yocto Project Development Tasks Manual
 
    intro
    start
-   common-tasks
+   layers
+   customizing-images
+   new-recipe
+   new-machine
+   upgrading-recipes
+   temporary-source-code
+   quilt.rst
+   development-shell
+   python-development-shell
+   building
+   speeding-up-build
+   libraries
+   prebuilt-libraries
+   x32-psabi
+   gobject-introspection
+   external-toolchain
+   wic
+   bmaptool
+   securing-images
+   custom-distribution
+   custom-template-configuration-directory
+   disk-space
+   packages
+   efficiently-fetching-sources
+   init-manager
+   device-manager
+   external-scm
+   read-only-rootfs
+   build-quality
+   runtime-testing
+   debugging
+   changes
+   licenses
+   vulnerabilities
+   sbom
+   error-reporting-tool
+   wayland
    qemu
 
 .. include:: /boilerplate.rst