docs: add workload-tracing document to admin-guide

Add a new section to the admin-guide with information of interest to
application developers and system integrators doing analysis of the
Linux kernel for safety critical applications.

This section will contain documents supporting analysis of kernel
interactions with applications, and key kernel subsystems expectations.

Add a new workload-tracing document to this new section.
Signed-off-by: Shefali Sharma <sshefali021@gmail.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230131221105.39216-1-skhan@linuxfoundation.org
[jc: tweaked the sphinx formatting a bit]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/admin-guide/index.rst

@@ -56,6 +56,17 @@ ABI will be found here.
 
    sysfs-rules
 
+This is the beginning of a section with information of interest to
+application developers and system integrators doing analysis of the
+Linux kernel for safety critical applications. Documents supporting
+analysis of kernel interactions with applications, and key kernel
+subsystems expectations will be found here.
+
+.. toctree::
+   :maxdepth: 1
+
+   workload-tracing
+
 The rest of this manual consists of various unordered guides on how to
 configure specific aspects of kernel behavior to your liking.