Expand deployments document structure

To cope with the growing number of deployments, the documentation
structure for deployments has been expanded to include sub-pages
for the different types of deployment. This commit includes
fuller descriptions of SP deployments.

Signed-off-by: Julian Hall <julian.hall@arm.com>
Change-Id: Id383cdb67f9e1e3a515e81673cc84077f77b5562
diff --git a/docs/developer/deployments/test-executables.rst b/docs/developer/deployments/test-executables.rst
new file mode 100644
index 0000000..78345ef
--- /dev/null
+++ b/docs/developer/deployments/test-executables.rst
@@ -0,0 +1,10 @@
+Test Executables
+================
+To do
+
+
+--------------
+
+*Copyright (c) 2022, Arm Limited and Contributors. All rights reserved.*
+
+SPDX-License-Identifier: BSD-3-Clause